Answer
$$c=2A-b$$
Work Step by Step
Solving the equation for $c$ by isolating $c$ on one side of the equation, we find:
$$ A=\frac{b+c}{2} \\ 2A=b+c \\ c=2A-b$$
Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)
by Bittinger, Marvin L.; Ellenbogen, David J.; Johnson, Barbara L.
Published by
Pearson
ISBN 10:
0-32184-874-8
ISBN 13:
978-0-32184-874-1
Chapter 4 - Polynomials - 4.5 Multiplication of Polynomials - 4.5 Exercise Set - Page 269: 75
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