I need help with these...

Partial Fraction Decomposition:

1/4x^2-9

and

-2x+15/x^2-x-12

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- October 28th 2009, 04:43 AMRenSullyPartial Fraction Decompostion
I need help with these...

Partial Fraction Decomposition:

1/4x^2-9

and

-2x+15/x^2-x-12 - October 28th 2009, 05:48 AMmasters
Hi RenSully,

Here's the second one:

If all the factors are of the form (*x*-*c*), then each of the partial fractions will be of the form .

First, multiply the original proper fraction by (*x*-*c*) and evaluate the result at*x*=*c*to get the value of the constant.

Thus: