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# Polynomial Multiplication

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Simplify the following:

$(2y-1)\cdot(4y^{10}+2y^9+4y^8+2y^7).$

Express your answer as a polynomial with the degrees of the terms in decreasing order.

Feb 14, 2021

#1
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(2y - 1)(4y10 + 2y9 + 4y8 + 2y7)

= 8y11 + 4y10 + 8y9 + 4y8 - 4y10 - 2y9 - 4y8 -2y7

8y11 + 6y9 - 2y7

Feb 14, 2021
#2
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Log, please do not do all of Clair's homework for her.

Feb 14, 2021
#3
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I'm actually helping someone else do their homework. I don't want to give them the wrong answers.

Feb 14, 2021
#4
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Do you think we are all idiots here.

You are a  cheat. Pure and simple.

Melody  Feb 14, 2021
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Maybe they actually are, though. But Claire, if you actually do not know or aren't sure, I think you should tell them the truth instead of doing something that might count as cheating. Don't let others take advantage of you, and if they really are a friend with help give them advice on a good tutor or teacher. Good luck!

CalTheGreat  Feb 15, 2021