Question

what partial fractions

Answer 1

Previously, you have added and simplified rational expressions, such as: 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.

Answer 2

partial fractions expansions of rational functions
and in dis fractions numerator and denominator are both polynomials....
partial fractions can be done if the degree of numerator is strictly less than the degree of denominator...