Answer
$25x^2+20x+4$
Work Step by Step
$(5x+2)^2\rightarrow$ rewrite as a product of polynomials
=$(5x+2)(5x+2)\rightarrow$ use FOIL method
=$25x^2+10x+10x+4\rightarrow$ combine like terms
=$25x^2+20x+4$
Prealgebra (7th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321955048
ISBN 13:
978-0-32195-504-3
Chapter 10 - Test - Page 729: 15
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