riiahh22 riiahh22

04-04-2019
Mathematics

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What is the polynomial 3y^2+(y+7)^2-15 after it has be simplified

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toriking098 toriking098

04-04-2019

Answer:

4y^(2)+14y+31

Step-by-step explanation:

First you need to do (y+7)(y+7)

y^2+7y+7y+49

y^2+14y+49

Add it all together

y^2+14y+49+3y^2-15

4y^(2)+14y+31

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