Question

Factor
3x^2+11x+6

Answer 1

use quadratic function..

Answer 2

More help, please?

Answer 3

Quadratic formula: http://c3e308.medialib.glogster.com/media/9c/9c086d138ebf82ce79c28f346c00bdea499a80b29a8ebb91f65e97f1fff25b22/quadraticformula.jpg

Your given: a=3 b=11 c=6
plug it in the quadratic formula.

Answer 4

Try grouping:

\(3x^2 + 11x + 6=3x^2 + 9x + 2x +6=3x(x+3)+2(x+3)=(x+3)(3x+2)\)

Answer 5

I got the answers (-4/6) and -3

Answer 6

I got the right answers now.

Answer 7

Perfect!

Answer 8

Thanks for the help!

Answer 9

yw

Answer 10

What about 9x^2-25?

Answer 11

You should see the 9x^2 as a (3x)^2 and 25 as 5^2 to rewrite your equation as (3x)^2 - 5^2. But why would I do that?

Answer 12

a^2 - b^2 = (a+b)(a-b)
That's why.

Answer 13

Okay I will.

Answer 14

What do I do after I rewrite it?

Answer 15

That will be your factors. You can then set (a+b)(a-b)=0. This will be the case when either a=-b or a=b. When you plug in a=3x and b=25, the two answers will just pop out.

Answer 16

*I meant b=5, not b=25

Answer 17

Thanks!