How to multiply and divide rational expressions
Вставка
- Опубліковано 3 сер 2024
- Learn how to multiply/divide rational expressions. A rational expression is an expression in the form of a fraction, usually having variable(s) in the denominator. Recall that to multiply two fractions, we multiply the numerators together and multiply the denominators together and to divide by a fraction, we multiply by the reciprocal of the fraction. The same rules applies when we want to multiply/divide two rational function.
Given two rational expressions, to multiply the two expressions, we factor all the polynomials and then cancel out all the common factors between the numerator and the denominator. We then multiply the remaining numerators together and the remaining denominators together. The result is the simplified product of the two rational expressions.
Given two rational expressions where one is dividing the other, we first turn the divisor rational expression upside down and change the division sign to multiplication sign. We then follow the process of multiply two rational expressions.
#rationalfunctions #multiplydividerationalexpressions
Timestamps:
0:00 Intro
3:13 Example #1
4:50 Example #2
Corrections:
2:40 4/6 when reduced is 2/3
School makes me stress and stress makes me depressed im so done with my life
I am sorry to hear about that Paul, don't put added pressure on yourself, do the best you can do and that is it, there is so much more to life than school
Your the only one who really cares about me tbh and i dont even know u personally thanks bro makes me feel a lot better
I hate life.
I used to feel the same way but don't worry. There are bad days but once they are over things are completely different. A few failures won't destroy everything. Life carries on, just roll with the punches and you will end up okay and alive every time! Also I assume you were in 11th or 10th grade when you wrote this so just look forward to all the things you'll get to do when school is finished for good.
I know it’s been 2 years but I hope you’re feeling bettwr
I've been watching your videos on rational expressions and etc all night.. game changer! Thanks for the content teach!
you are very welcome!
Your videos are some of my favorite. I am a working dad going back to school in my mid 30's and just want to let you know I appreciate that you've posted these. You do such a great job of explaining what we need to know and simplify your own methods of teaching so well! Helps save me headaches and time trying to figure out this stuff! All the best to you!
I'm in class abt to take a test rn I'm screwed gn
so howd it go
@@benlee5039 they failed
@@benlee5039 im his teacher, he got an f and was expelled
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You are literally a magician I never really found algebra a like-able subject but after I discovered your channel it's really fun to solve... it's 2024 and your videos are still helpful to me and my friend! Thank you so much
im failiing this math final tomorow :(
with that attitude you may, study hard, keep learning and do your best, I have failed many tests but that never stopped me from continuing to learn
good be failed
Failing is your first attempt in learning.
Problem is that school doesn't acknowledge that.
@@benlee5039 only too true
At 2:56, wouldn't that be 2 thirds??? 2/3
Lmao I was thinking that
Yes that is supposed to be ⅔
He's dumb
Yes
@@fritzmarickfernandez2228 Yet you need to watch the videos he made
I just want to say thank you so much, you have helped me to learn this concept. I have a big test tomorrow, and I am finally understanding the concept because of you. Thank you again.
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Honestly I feel like your my real teach right now than my math teacher at school thnx sensei I hope your vids help me get through this algebra course.
This helped me alot, online classes are the only thing available in our city for now.. I can't understand math without someone explaining it to me, and now I can because of this channel
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There is a mistake at 2:41 when you reduce the fraction 4/6 to 3/2.
Whenever I dont understand the lecture in my class.
Me: BRIAN I NEED HELPPP.
Try my channel mathfullyexplained
Math vids are actually better than Math classes most of the times methods teached to us are so long I'd even get lost in my computations
Ty teach!
i swear this guy helps me survive online school
dude this guy is litterly my teacher at this point 😂
THANK YOU SO MUCH! I was freaking out because I didn’t get this at all, and I have a quiz tomorrow but now I think I get it better
I’ve been watching your videos a lot this year and it helps me so much! Thank you for doing these 🙂
I don’t know what I would do without these videos thankyou 🙏🏾
Q. At the 2:50 mark in the video, how does 4/6 = 3/2 ? Doesn't 4/6 reduce to 2/3 ? Did I miss something in your explanation?
I'm doing this in Grade 11 with finding non-permissible values as well. It's the hardest unit in the Grade 11 math in my opinion.
im doing it rn
Thank you. I am
Behind on this lesson and this is helping me catch up.
GAME CHANGER LOVE IT!!!!!
Happy to help!
@@brianmclogan Omg wasn’t expecting a answer big fan now lol
this man is a true inspiration!
cheers!
i have a test tomorrow and i’m really about to fail LMAO
you got this CARA!!
How did you do at that time ??
@@angeldustforlife9060 honestly i don’t remember. probably flunked it. but hey, i still graduated 🤷🏾♀️ (don’t be like me!)
I have one today, we’ll see how it goes!
@@arielfarra7979 good luck!!!
thank you for showing me a method of doing this i understand. im still struggling with the more complex ones though
U don’t even understand how great these videos are. Without these I am failing math
best math youtuber out there
Thanks so much. I have some tests coming around tomorrow and this helped me study and understand this extremely complicated subject
Try my channel mathfullyexplained
You are a great teacher
Happy to help you out!!
An elementary school teacher always told me "dividing fractions is as easy as pie, flip the second and multiply." I'm in highschool and I still remember it haha.
bro 2:42 its 2 thirds he go it backwards
I just want to make sure, but did you mean divide by x(x+4) at the end?
yes, thanks for looking out Jose
Was gonna say the same thing forgot the (x+4) should definitely try to clarify everything for the people at home
Bro TYSM, I struggled so hard to understand this
At the beginning, when you 1/2 x 4/3 = 4/6, you said it reduced to 3/2. 4 doesn't reduce to 3. It reduces to 2, so it would have been 2/3. Is that correct, or am I missing something? Sorry, it's been 10 years since I graduated high school, and I'm trying to refresh my memory on math, lol.
yes it is 2/3
Awesome! Thanks!
lol!!!!!
glad i wasnt the only one who noticed
Thank you! 🙂
Love this UA-cam channel
Try my channel mathfullyexplained
thank u this helped me a lot
Try my channel mathfullyexplained
I just checked, this was made in 2014 wow. Still helpful but i just hope i can do good on my next (last test of the year).
Thank you so much
Try my channel mathfullyexplained. Unit on rational expressions plus more units
Thank you
In 2:40 isn’t 2\3? because 4 divided by 2 it will 2 not 3 and 6 divided by 2it will be 3
what happened to the (x+4) at the very end? why’s it suddenly not part of the final calculations
ma boi thank you
you are very welcome!
thank you
Have a test tommorow it apppears I don’t get it :(
So with x+5/3x * 9x^2/x+5 would it equal 3x^2?
no you cannot divide terms across addition
Math was my favourite lesson but now it is really hard to get it
This step at 2:01 my teacher took a year too explain that one step
Try my channel mathfullyexplained
at the end what happened to the (x+4) ???
thank you so much you saved my ass
What do you do with the x+4 at the end
Try my channel mathfullyexplained. Unit on rational expressions plus more units
This video confuses more than it helps.
My only problem with rational expressions is finding the area of a triangle with this concept.
Try my channel mathfullyexplained.
I know here in America many community colleges use Pearson for online education. I have completed 2 math classes through this company via my school and it is a terrible math interface when it comes to providing any help or teaching anything. It is really pathetic and fragmented when you compare the examples to the homework. The biggest issue is they do not fully explain and make the assumption that you know all of these things that you may not know. That is not teaching. I have gone to Mclogan for both classes and his videos got me through the classes. Pearson should really give Mclogan the contract because what they are providing is not adequate.
it’s 11:30 pm and i have a test tomorrow i was absent a lot cause i get sick a lot and i can’t go with a cold cause of covid idk what i’m gonna do if i fail this i won’t get my grade up in 2 days before the trimester ends
Try my channel mathfullyexplained
ok i now all this stuff and um i now it a diffrent way so this just got me cunfused
hero
can someone please explain to me how 4/6 reduces to 3/2
it doesnt, remember hes not perfect and can make mistakes!
You reduced 4/6 to 3/2 in the division.
4/6 reduces to 3/2?
2/3
Try my channel mathfullyexplained. It has a unit on rational expressions plus more units
how to factor if it is a prime number??
pls help im failing math and my family is not so proud
Bit late, not a math expert, but prime numbers are ONLY that number and 1, take 5 for example, it HAS to split into 5 x 1, so in favoring like 5x^2 + 6x + 1 it would split as (5x + 1) (x + 1), don't mind the + parts only the 5x and the x
Sorry if it doesn't help much, just saw this and tried to help out
i gotta math quiz tommorow half way into the vid i’m ode bored
remember me3
Where did you get the 5?
Pls reply tnx
Our exam is tomorrow😫
the 5 was always there
I think i lost my brain by trying to think this equation
Can you solve this a + 4/a2 + 7a + 10 × a2 + 6a + 5 with solution pls im failing my marh class ;((
Try my channel mathfullyexplained. Unit on rational expressions plus more units
I didn't understand and u were going too fast.
Try my channel mathfullyexplained. Unit on rational expressions plus more units
Proud bf here
Try my channel mathfullyexplained
2/3
too bald
Mahirap ang math
Why do people talk shit about a teacher... To a teacher?
لا تسوي مقاطع و انت صايم