Question

Factor: 15(x-5)^2-7(x-5)-30

Answer 1

Let x-5=y
15y^2-7y-30=
(3y-5)(5y+6)
Now replace y with x-5
[3(x-5)-5][((x-5)+6]=
[3x-15-5][x+1)
(3x-20)(x+1)

Answer 2

Luis, I wish you wouldn't use bagatrix to post solutions. You're getting credit for not doing your own work

Answer 3

Whoops. I left out a 5

Answer 4

Good solution mertsj

Answer 5

[(3(x-5)-5][5(x-5)+6]=
[3x-15-5][5x-25+6]=
(3x-20)(5x-19)

Answer 6

Well, that's still most likely the best approach to this. It's way better than bagatrix that's for sure

Answer 7

Thanks Hero.

Answer 8

Is that a threat? I hope not?

Answer 9

If a mod saw what you have written it would probably result in an automatic suspension