Answer
10x$^2$-7
Work Step by Step
Distribute the negative sign to the parentheses and then subtract vertically.
$\qquad7x^2-3$
$\underline{-(-3x^2+4)}$
$\qquad\quad\downarrow$
$\quad7x^2-3$
$\underline{+\,3x^2-4}$
$\quad10x^2-7$
Introductory Algebra for College Students (7th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13417-805-X
ISBN 13:
978-0-13417-805-9
Chapter 5 - Section 5.1 - Adding and Subtracting Polynomials - Exercise Set - Page 349: 77
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