Question

preeciso pra amanha, n entendi nada

Answer 1

a)

=2x²-3x

b)

=8ab²+2b³

c)

=-x³y+2x²y²-xy³

d)

=3a²b²-15ab³-21a²b³

e)

=-4x²y-12xy+4xy²

f)

=2y²*(y²-7)

=$2y^{4}$-14y²

g)

=x³-4x²+9x+2x²-8x+18

=x³-2x²+x+18

h)

=x³y+ 2x²y²- 6x²y - x²y²-2xy³+6xy²

=x³y +x²y² - 6x²y + 6xy²