Question

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

Sometimes

Always

Never

Answer 1

always

Explanation:

this product can also be written as a^2 - ab - ab + b^2

which is a^2 - 2(ab) + b^2

a perfect square trinomials equation is

a^2 + 2(ab) + b^2

and this qualifies