This problem deals with solving partial fraction decomposition with repeated factors. The viewer needs to pay special attention to the repeated factors, they must count up the powers and include the factors as many times as the exponent. They should also be very careful with their signs, whenever distributing or substituting. Another important thing is that the answers gotten for a, b, c, etc, are put in the split up fraction from the beginning. Also the more letter involved the more equations there will be. These are the most important things to keep in mind when doing the problem. :)
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