Answer
$28a-12$
Work Step by Step
Using the long division method shown below, then
$$\begin{aligned}
&
(56a^2+4a-12)÷(2a+1)
\\&=
28a-12+\frac{\color{red}{0}}{\color{red}{}\color{blue}{2a+1}}
\\&=
28a-12
.\end{aligned}
$$
Algebra 1
by Hall, Prentice
Published by
Prentice Hall
ISBN 10:
0133500403
ISBN 13:
978-0-13350-040-0
Chapter 11 - Rational Expressions and Functions - 11-3 Dividing Polynomials - Practice and Problem-Solving Exercises - Page 670: 38
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