Question

I am having so much trouble with Special Products. Could someone please help me solve: The product of (a - b)(a - b) is a perfect square trinomial.
a.) sometimes
b.) Never
c.) always

Answer 1

Notice that (a-b) and (a-b) are identical. That means it can be expressed like this: \(\large (a-b)^2\), which is a square. So the product of those two will always be a perfect square trinomial

Answer 2

What about (a+b)(a-b) ???

Answer 3

not a perfect square, nor is it a trinomial.

Answer 4

so never?