Write an informal explanation of partial fraction decomposition.
Partial-fraction decomposition is the process of starting with the simplified answer and taking it back apart, of "decomposing" the final expression into its initial polynomial fractions.
To decompose a fraction, you first factor the denominator. Let's work backwards from the example above. The denominator is x2 + x, which factors as x(x + 1).
Then you write the fractions with one of the factors for each of the denominators. Of course, you don't know w...
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