Question

How do you reduce 9(25x^2-16y^2)?

Answer 1

Yes. It's a perfect square trinomial.

Answer 2

The original equation was 225x^2-144y^2.

Answer 3

What would it be factored out?

Answer 4

(25x)^2-(12y)^2=(25+12y)(25x-12y)?

Answer 5

Grr.

Answer 6

That makes more sense. I think I got it.. lol Maybe.

Answer 7

Alright.

Answer 8

Ohhh, okay. In the associative property line, why would there be a 3*3? Wouldn't it be 3*2 since there's only two of them?

Answer 9

Oh.. I knew that..

Answer 10

I never thought of it that way. We've never really been taught to use properties. Thank you!

Answer 11

Oh. I could have used that a loooong time ago.

Answer 12

Good point