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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.

 Mar 18, 2021
 #1
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(2y - 1)   ( 4y^10  + 2y^9  + 4y^8  + 2y^7)  =

 

2y ( 4y^10  +2y^9  + 4y^8  + 2y^7)  -  1  ( 4y^10  + 2y^9  + 4y^8  + 2y^7)  =

 

8y^11  + 4y^10  + 8y^9  + 4y^8   -   4y^10  - 2y^9 - 4y^8  - 2y^7  =

 

8y^11 + 6y^9  - 2y^7

 

 

cool cool cool

 Mar 18, 2021

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