Question

what is the simplified expression of the following polynomial: xy4 + 5y7 - (6xy + 7y7) - x8y2 + (-3xy4)

Answer 1

This polynomial would simplified as: -2y^7-2xy^4-x^8y^2-6xy (I'm assuming you meant to square the answers)

If you didn't the answer would be: -30xy-14y

But I'm pretty sure you meant to put the first one!

Answer 2

Answer:

$(-2y^{7}-2xy^{4}-x^{8} y^{2}-6xy)$

Step-by-step explanation:

The given expression is  $xy^{4}+5y^{7}-(6xy-7y^{7})-x^{8}y^{2}(-3xy^{4})$

We have to simplify the given expression.

$xy^{4}+5y^{7}-6xy-7y^{7}-x^{8}y^{2}-3xy^{4}$

$(xy^{4} -3xy^{4})+(5y^{7}-7y^{7})-6xy-x^{8}y^{2}$

$-2xy^{4}-2y^{7}-6xy-x^{8} y^{2}$

$-2xy^{4}-2y^{7}-6xy-x^{8}y^{2}$

Therefore, simplified form of the expression will be

$(-2y^{7}-2xy^{4}-x^{8} y^{2}-6xy)$