Multiply fractions

• May 6th 2009, 08:44 AM
seders99
Multiply fractions
My problem understanding what the common demominator is

x^2-4 * 3
x x-2

is it x-2? because it has an x and a 2??
• May 6th 2009, 08:52 AM
masters
Quote:

Originally Posted by seders99
My problem understanding what the common demominator is

x^2-4 * 3
x x-2

is it x-2? because it has an x and a 2??

Hi seders99,

This is a product. You don't need a common denominator.

I think what you have written is this:

$\frac{x^2-4}{x}\cdot \frac{3}{x-2}$

If that's not it, let me know.

Now factor the numerator in your first fraction.

$\frac{(x-2)(x+2)}{x} \cdot \frac{3}{x-2}$

Can you finish?
• May 6th 2009, 09:06 AM
seders99
ok well that makes sense!! thanks

3(x+2)
x

Correct??
• May 6th 2009, 09:11 AM
masters
Quote:

Originally Posted by seders99
ok well that makes sense!! thanks