Question

The polynomial below is a perfect square trinomial of the form A2 - 2AB + B2

Answer 1

9x to the second power - 30x + 25

Answer 2

I'm stuck how do I figure this out?:/

Answer 3

ok... the simple way to do this is look at the 1st and last terms

9x^2 = (3x)^2

and

25 = 5^2

so A = 3x and B = - 5

the reason B is negative is that the middle term is negative...

so is -30x = -2AB

you need to decide...

\[-30x = 2 \times 3x \times -5\]