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I have posted a link there so the OP can view my work.I have problems solving this(integration by partial fractions)?

∫ (x^5 + 2x^3 - 3x)dx / (x^2 + 1)^3

I really don't know. Partial fractions. I know that you're supposed to do something like Ax+B when it comes to quadratic eqn's and you're supposed to give another arbitrary constant when it's raised to a power. but I don't think I can do it unless there's something else with it and I have no idea how to factor it. I really should've listened to our earlier algebra classes.