Question

Combine the like terms to simplify the expression:

Answer 1

$5+7+15xy^2+9y^3+10x-13xy^2-3x-8y^3\\\\=(5+7)+(15xy^2-13xy^2)+(9y^3-8y^3)+(10x-3x)\\\\=12+2xy^2+y^3+7x\\\\=\boxed{y^3+2xy^2+7x+12}\leftarrow\boxed{A}$