(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

integrate((x^3+72)/(x^2+6x+8))dx

2. Relevant equations

3. The attempt at a solution

I decided to use partial fractions method.

x^2+6x+8 factors to (x+4)(x+2)

x^3+72=A(x+2)+B(x+4)

when A=-2, 64=B(2), B=32

when B=-4, 8=A(-2), A=-4

-4*int(1/(x+4)) + 32*int(1/(x+2))

-4*ln(x+4) + 32*ln(x+2) <---ANSWR

What was wrong?

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# Homework Help: Partial Fractions problem

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