Finding the Equation of a Polynomial from a Graph

Finding the equation of a Polynomial from a graph by writing out the factors. This example has a double root. I show you how to find the factors and the leading coefficient.
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Math with Mr. Barnes is a math video tutorial channel meant to help students with math. I’ve has been a high-school mathematics teachers for 10 years. I make video tutorials on pre-calculus 10, 11, and 12, trigonometry, calculus, Physics, circle geometry, and more.
I have videos on: slope, lines, quadratics, exponents, circles, tangents, derivatives, limits, solving equations, and many more.
Check out some of my more of my videos:
Calculus Playlist:
• Calculus I
95% Confidence Interval:
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Newton Egg Drop Fail:
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Finding a relation from a table:
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Trigonometric Proofs:
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Absolute Value Limits:
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Inverse of a Quadratic Function:
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Thank you! Someone who finally breaks it down in the most simple way

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Lmao the mix of comments from years ago to everyone coming to it now

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1:37 bit bit bit bit bit bit

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I watched several videos of this before I found your video. NONE of them helped me and yours helped me finally solve my problem. THANK YOU

[@chloerose560]

THIS IS AN EPIC TUTORIAL! I had a problem on my homework that was very similar to this one. I could easily figure out how to find the formula. Thanks a bunch :)

[@hogan124_3]

Learned more from this than I did my teacher

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Wow.... this video literally saved me so many emails back and forth with my teacher. THANK YOU THANK YOU THANK YOU FOR EXPLAINING THIS SLOW AND EASY.

[@Rikmach]

THANK YOU. the instructional videos that came with my online course were complete garbage at teaching how to do this.

[@gauravjain9477]

Thank you so much!!
I literally figuring out this topic since 1 hour and finally from your video, it becomes very simple
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[@kinseylise8595]

This is exactly what I needed, I wish that I had found it last night when I was working through problems like this. I couldn't for the life of me remember how to do it!

[@Ziyad_Y]

Thank you so much for explaining it so simply!

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FINALLY SOMEONE WHO EXPLAINED IT GOOD!!!!

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7 Years later and this video still taught me more then my course did LOL

[@thatoneguy5692]

This helped a lot thank you! 🙏

[@ripxrina]

thank you so much man, i can finally do these equations 😭🙏 bless your heart omg

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Very helpful, thank you!

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Excellent, Pls make more videos like this
Thank you very much.

[@ilovereadingwuxiaxianxiaat8994]

Thanks! Final is coming up and I forgot how to do this

[@zalmat_myst8830]

Thank you so much, you have no idea how helpful this is!

[@AbhishekSir777]

Why is there (x-2)²😢😢😢😢😢 please explain

[@bigcheesetaste]

Makes graphing the derivative of another graph so much easier than the way the textbook wants you to do it

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[@hereiamaliveyetagain]

I'm doing this. But my graph isn't giving y intercept numbers. There's only x numbers. So I really don't know how to do this. It also says I have leading cowf of 1 or -1 so I dunno if that means a

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[@toomanycactus3138]

why do we use zero in place of x in (x-x^1). where does it come from?

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Thank you🤝

[@benwatson6146]

thank you so much i have an exam in an hour and this was the final peice that was missing from my knowledge

[@keziah.chrish]

Could u pls tell me why he put squared

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What if the y-int is (0,0)?

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[@arwendanielle6398]

How do you know if it’s a double root or not?

[@luckyjabby]

Its a double root if it touches the x-axis but doesn't crosses the x- axis edit: (basically it only slides through)

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[@vownal8260]

why did u square the 2

[@hatsukotaro]

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how did you know the 2 was a double root

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[@logancarras1154]

ok, but.... whats a double root and how do i know what exponent to put

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Luke Cutter ok

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Tysm man my bogus ass math teacher rushed us thru this unit #msshahisbogus

[@padthai754]

why at 1:49 do you add the square

[@tjayy21]

coz it is a double root

[@tjayy21]

2lines in a coordinate

[@0w3n_dnf45]

Why did you square (x - 2)

[@dawanasianboy3153]

Wait, what is a double root? Would (x+4) = a double root?

[@kaitonguyen6088]

no, you would have to do foil and mulitiply literally (x-2)(x-2). so (x-2)^2 would be x^2-4x+4.

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Why is there (x-2)² please explain😭😭😭😭😭😭😭😭😭😭

[@DZX5000]

he said that there are two lines that branch of that X-intercept point and thats why there are 2 roots there.

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56,334 views 634 likes

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It’s not working