Posted by **Loretta** on Thursday, September 10, 2009 at 6:18pm.

How do I factor 4x^2-12x+8?

so far I took out the Greatest Common Factor.

4(x^2-3x+2)

What next?

- 10th grade math -
**Katie**, Thursday, September 10, 2009 at 6:20pm
do you know how to use the diamond? or were you taught with the FOIL square?

- 10th grade math -
**Loretta**, Thursday, September 10, 2009 at 6:22pm
Never heard of diamond. I've heard of FOIL.

- 10th grade math -
**Katie**, Thursday, September 10, 2009 at 6:24pm
Then you would use FOIL, and find which two numbers multiply to get 2, and add to get -3

- 10th grade math -
**Loretta**, Thursday, September 10, 2009 at 6:27pm
Ok that's what I thought. I tried to do that.

-2 x 1=-2

-2 + 1=-1

2 x 1=3

2+1=3

-1 x 2=-2

-1+2=1

I don't know what other numbers multiply to 2.

- 10th grade math -
**Katie**, Thursday, September 10, 2009 at 6:29pm
Try making both 2 and 1 negative

- 10th grade math -
**Loretta**, Thursday, September 10, 2009 at 6:31pm
oh wow haha.

I see.

thank you!

- 10th grade math -
**joyce**, Friday, September 18, 2009 at 2:45am
how do you work the following question out:

if you have a rectangle, whos length is five cm longer than twice it width and has an area of 207com what are the values off the length and width

any help of any kind would be welcome.

thanks.

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