Algebra 2 - Dividing complex numbers by multiplying by i, (8-6i) / 3i

www.freemathvid... In this video tutorial I show you how to divide complex numbers. Since complex numbers have an imaginary part which we cannot divide into other numbers we rewrite the expression by multiplying by i or the conjugate on the denominator or numerator.
(8-6i) / 3i

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it’s been 4 years how u doing

[@brianmclogan]

that's what I am here for, don't be shy to share the love. Let me know how else I can help

[@aeronkimdelossantos4300]

i have a question sir! is -2+8i/-3 correct? or it should always be -2-8i/3???

[@안녕-n5h5g]

@Uchechi Godwin-Offor yeah. you split it into two separate fractions. so (3/20) - 4i/20 which can be simplified into 3/20 - 1i/5 because 4/20 is just 1/5. And that's it.

[@안녕-n5h5g]

In other words. DON'T simplify it into a decimal UNLESS the question specifically asks for it. which rarely happens.Usually they prefer it in fraction format. I hope I answered correctly. Hey, if someone finds an error in my answer please let me know! disclaimer - I'm a learning student too. :)

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[@fiercingdragon]

I had a similar question, which was (4+6i)/3i. Followed the same method and got the answer.
Very helpful.

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[@mackennaomara4868]

I missed this due to a chest cold, thank you for explaining this in a way I actually understand

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Teaches more than my actual teacher

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[@esadcan7290]

Wow didnt notice this was uploaded exactly 8 years ago, thanks for the video

[@davidhuynh3393]

Please answer but what if you could simplify further: “ like with the case of 8i /2. ? Thank you, and this was a very neat video. ( I’m gonna stay for A long time.)

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really helpful

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4:26 *Me the whole video*

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[@natalieherrera7223]

How do you divide something like -4i/3-1 would it be divided by i?

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[@안녕-n5h5g]

I'm here watching this in 2020. August 1 people! Thank you Mr.McLogan!

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[@AbhimanyuVenu]

For which grade is this taught in ur country sir?

[@mengmeiqi6965]

It depends, algebra 2 can be taken in any year after algebra 1 and geometry are completed. Technically most people usually take it in 10th or 11th grade but it’s possible to get it in 8th or 9th

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[@mikiyahrenay2501]

do you always multiply it by i over i ?

[@brianmclogan]

no but if you have a complex number as bi then yes, if in the form a+bi then would need to multiply by the conjugate a-bi

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you are very welcome!

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I’m rlly using this for my midterm 😖

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3:14

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