Question

The product of (a + b)(a − b) is a perfect square trinomial.
A) sometimes
B) never
C) always

Answer 1

If you multiply it out, you will get:
\[a^2 - b^2\]
Which is the difference of squares.

Answer 2

Do you think it's a perfect square trinomial? Or no?

Answer 3

I'll give you a hint: you should be able to write a perfect square trinomial in the form:
(a+b)^2
OR
(a-b)^2

Answer 4

A perfect square trinomial is an expression with three terms that is the square of a binomial.

a + b is a binomial

$$\huge (a + b)^2=( a + b ) ( a + b )$$

That^ is the square of a binomial.

Use FOIL to see if that answers your question :-)