# Combing fractions for integrals

• March 14th 2013, 10:02 PM
Steelers72
Combing fractions for integrals
Attachment 27529

I was taught a different way to do this type of problem and getting:

A(x^2+64) +(Bx+C)(x-1) = 65

I do not understand what they want in this question! If anyone can help, I appreciate any advice!
• March 14th 2013, 10:18 PM
MINOANMAN
Re: Combing fractions for integrals
now use algebra to calculate B and C . you must find B = C = -1.

MINOAS
• March 14th 2013, 10:28 PM
Steelers72
Re: Combing fractions for integrals
Quote:

Originally Posted by MINOANMAN
now use algebra to calculate B and C . you must find B = C = -1.

MINOAS

Thanks for the reply! They are asking to combine the fractions (which is an alternative step instead of the route I usually take). I'm not sure how they are combining the equations in this problem. It's the part on the attachment that has the red X on it
• March 15th 2013, 06:20 AM
hollywood
Re: Combing fractions for integrals
Quote:

Originally Posted by Steelers72

I was taught a different way to do this type of problem and getting:

A(x^2+64) +(Bx+C)(x-1) = 65

I do not understand what they want in this question! If anyone can help, I appreciate any advice!

For this part of the problem, you're only working with the left hand side:

$A(x^2+64) +(Bx+C)(x-1)$

You multiply it out and combine the $x^2$, $x$, and constant terms, and they are asking for the constant term.

- Hollywood