April 21, 2014

Homework Help: Math2(Please Help)

Posted by Margie on Saturday, March 3, 2007 at 9:56pm.

4x 8
___ - ______
x+2 x-1
*Simplify The Expression

I'm going to assume your problem is this:

4x/(x+2) - 8/(x-1)

Use a common denominator since the denominators are not the same.

Common denominator is: (x+2)(x-1)

Rewriting the problem, we have:
4x(x-1)/(x+2)(x-1) - 8(x+2)/(x+2)(x-1)

Combining the numerators:
[4x(x-1) - 8(x+2)]/(x+2)(x-1)

Simplify the numerator. Remember to watch signs. If the numerator can be factored, try it. Then reduce further if you can.

I hope this will help.

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