1. ## Partial Fraction Decomposition

I need help with this Partial Fraction, I don't know how to get A and B

$\int(2x-94)/(x^2+2x-63) dx = A/(x+9) + B/(x-7)$

$2x - 94 = A(x+9)+B(x-7)$

How do I solve for A and B?

2. Originally Posted by killasnake
I need help with this Partial Fraction, I don't know how to get A and B

$\int(2x-94)\frac(x^2+2x-63) dx = A/(x+9) + B/(x-7)$

$2x - 94 = A(x+9)+B(x-7)$

How do I solve for A and B?
i'm not sure what you're saying in your first line, but going off the second...

let's call it equation (2)

plug in x = -9 in (2) and solve for B

then plug in x = 7 in (2) and solve for A

3. Oh okay Thank you, sorry I was having trouble writing the question in the math format.

4. Originally Posted by killasnake
Oh okay Thank you, sorry I was having trouble writing the question in the math format.
use \frac {}{} to get fractions. type the numerator in the first pair of {} and the denominator in the second pair

so $$\frac {2x - 94}{x^2 + 2x - 63}$$ yields $\frac {2x - 94}{x^2 + 2x - 63}$