Answer
False.
Work Step by Step
False, because the factorization is actually $12x^4+21x^2=3x^2\cdot4x^2+3x^2\cdot7=3x^2(4x^2+7)$.
Intermediate Algebra for College Students (7th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13417-894-7
ISBN 13:
978-0-13417-894-3
Chapter 5 - Section 5.3 - Greatest Common Factors and Factoring by Grouping - Concept and Vocabulary Check - Page 347: 3
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