Question

1. Expand and then simplify each expression.
a) (a + 2)(a + 2)
b) (x + 3)(x – 3)

Answer 1

a)a^2+4a+4
b)x^2-9

As a general rule, whenever you have (a+b)^2, it equals a^2+2ab+b^2.
(a+b)(a-b)= a^2-b^2

Answer 2

Thank you

Answer 3

You're welcome