Precalculus (6th Edition) Blitzer

Published by Pearson
ISBN 10: 0-13446-914-3
ISBN 13: 978-0-13446-914-0

Chapter 7 - Section 7.3 - Partial Fractions - Concept and Vocabulary Check - Page 841: 1


The stated partial fraction decomposition is correct.

Work Step by Step

We know that it is stated that $\frac{A}{\left( x+2 \right)}+\frac{B}{\left( x-3 \right)}$ is the partial fraction decomposition of the algebraic expression $\frac{7x}{\left( x+2 \right)\left( x-3 \right)}$ into a series of smaller components. It is known that the partial fraction decomposition is the technique used for rational functions. It is the mathematical operation by which rational function can be expressed as a sum of a polynomial and several fractions, including ‘equating coefficients’. And the partial fraction decomposition associated with $\frac{px+q}{\left( x-a \right)\left( x-b \right)},a\ne b$, is as follows: $\frac{A}{\left( x-a \right)}+\frac{B}{\left( x-b \right)}$ Therefore, $\frac{A}{\left( x+2 \right)}+\frac{B}{\left( x-3 \right)}$ is the final simplified algebraic expression. Thus, the partial fraction decomposition of the expression, $\frac{7x}{\left( x+2 \right)\left( x-3 \right)}=\frac{A}{\left( x+2 \right)}+\frac{B}{\left( x-3 \right)}$ is correct.
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