Answer
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Work Step by Step
$(px+q)^2=p^2+2pqx+q^2$
Thus, if $b=\boxed {2*\sqrt {ac}}$ then it is most certainly a perfect square trinomial.
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 4 Quadratic Functions and Factoring - 4.4 Solve ax(squared) + bx + c = 0 by Factoring - 4.4 Exercises - Skill Practice - Page 263: 2
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