Homework Help: factoring

Posted by Miley on Wednesday, January 30, 2008 at 4:17pm.

Question: 30x^3 + 18x^2 - 5x - 3

My Answer: 6x^2(5x+3)(-5x-3)

Is that right. If not can you please correct my answer and tell me what to do! Thanks :)

factoring - mk-tintin, Wednesday, January 30, 2008 at 4:24pm
it's wrong

you have
6x²(5x+3)-(5x+3)
and you can facorize it
- factoring - Miley, Wednesday, January 30, 2008 at 4:29pm
  So what is the right answer?
factoring - mk-tintin, Wednesday, January 30, 2008 at 4:31pm
(5x+3)(6x²-1)

or
(5x+3)(sqrt(6)x-1)(sqrt(6)x+1)
factoring - drwls, Wednesday, January 30, 2008 at 5:38pm
I believe mk-tintin intended to write:
(5x+3)(6x^2-1)

which can be further factored to obtain:
(5x+3)(sqrt(6)x-1)(sqrt(6)x+1)

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