Answer
$4x^2+16x+15$
Work Step by Step
$(5+2x)(2x+3)\longrightarrow$ use the FOIL method to multiply
=$10x+15+4x^2+6x\longrightarrow$ combine like terms
=$4x^2+16x+15$
Algebra 1
by Hall, Prentice
Published by
Prentice Hall
ISBN 10:
0133500403
ISBN 13:
978-0-13350-040-0
Chapter 10 - Radical Expressions and Equations - 10-2 Simplifying Radicals - Mixed Review - Page 612: 91
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