Answer
$$18x^3 +72x^2$$
Work Step by Step
Using the distributive property and the rules of exponents, it follows:
$$18x^3 +4(18)x^2 \\ 18x^3 +72x^2$$
Algebra 2 (1st Edition)
by Larson, Ron; Boswell, Laurie; Kanold, Timothy D.; Stiff, Lee
Published by
McDougal Littell
ISBN 10:
0618595414
ISBN 13:
978-0-61859-541-9
Chapter 6 Rational Exponents and Radical Functions - 6.2 Apply Properties of Rational Exponents - 6.2 Exercises - Mixed Review - Page 427: 103
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