# Thread: Algebra problem... drawing a blank

1. ## Algebra problem... drawing a blank

I need to break down 10/(((w^2)+100)((w^2)+4)) into (A/((w^2)+100))+(B/((w^2)+4)) form. I am completely drawing a blank, any help would be great thanks.

2. Originally Posted by blktip33
I need to break down 10/(((w^2)+100)((w^2)+4)) into (A/((w^2)+100))+(B/((w^2)+4)) form. I am completely drawing a blank, any help would be great thanks.
Fourier Transforms you can do, but partial fractions you cannot .

The mistake you are making is the the denominator is a quadradic not a linear polynomial.

Thus,
10/((w^2+100)(w^2+4)) = (Aw+B)/(w^2+100) + (Bw+C)/(w^2+4)

3. haha i know... partial fractions is one of those thing i have to relearn every year... thanks again!