# Partial fractions - 2

• November 16th 2012, 08:12 AM
Greymalkin
Partial fractions - 2
Attachment 25749
Why is the coefficient of the x4 term stated like 0=1/3+B+D
I foil all of the terms and get the same result $x^4(A+B+D)$ but why is the equation 0=? Isnt the equality the x's coefficient(which is 1) equal to the variables?
Why is it 0=A+B+D??
• November 16th 2012, 08:37 AM
topsquark
Re: Partial fractions - 2
Quote:

Originally Posted by Greymalkin
Attachment 25749
Why is the coefficient of the x4 term stated like 0=1/3+B+D
I foil all of the terms and get the same result $x^4(A+B+D)$ but why is the equation 0=? Isnt the equality the x's coefficient(which is 1) equal to the variables?
Why is it 0=A+B+D??

Because no terms of x^4 appear in the numerator of the original fraction.

-Dan