Question

The product of (a + b)(a − b) is a perfect square trinomial.

Answer 1

Sometimes
Always
Never

Answer 2

If you FOIL it:
First: a*a = a²
Outer: a*(-b) = -ab
Inner: b*a = ab
Last: b*(-b) = -b²

Add up everything: a² + -ab + ab + b².

What do you think about the middle two terms?

Answer 3

theyre the same?

Answer 4

it expands to a^2-b^2

so it never a trinomial

Answer 5

So its never?

Answer 6

never cuzz the middle terms cancel out meaning you always get a binomial, not a trinomial

Answer 7

ohhhh okay :) thank you!

Answer 8

The middle two terms cancel: -ab+ab=0, so you are left with only a²-b².
So never a trinomial; there are only two terms.

Answer 9

for anyone lookin at this the answer is not never

Answer 10

its not always cause I just got it wrong