Question

Please Help

1.Simplify b(a + b) - a(a - b) ?

2.Find the product.

-2x(x 2 - 3)


3.Find the product.

(2p + 7)(3p - 9)

Answer 1

b(a+b)-a(a-b)

First apply the distributive law.

b*a + b*b -a*a -a*-b
ba + b^2 -a^2 +ab

Since the order in which you multiply doesn't matter, rearrange b*a to a*b

ab + b^2 -a^2 +ab

Combine like terms

-a^2 + b^2 +2ab

Answer 2

\[-2x(x ^{2}-3)\]\[-2x*x ^{2}-2x*-3\]\[-2x ^{3}+6x\]

Answer 3

I'll let you do the last one.

Answer 4

Thanks