Answer
19x$^2$
Work Step by Step
Simplify the expression by combining like terms.
7x$^2$+12x$^2$=(7+12)x$^2$=19x$^2$
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 1 - Section 1.8 - Exponents and Order of Operations - Exercise Set - Page 99: 15
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