Answer
$x^3+6x^2+12x+8$
Work Step by Step
RECALL:
$(a+b)^3=a^3++3a^2b+ 3ab^2+b^3$
Use the formula above with $a=x$ and $b=2$ to obtain:
$=x^3+3(x^2)(2)+3(x)(2^2)+2^3
\\=x^3+6x^2+12x+8$
Precalculus (6th Edition) Blitzer
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13446-914-3
ISBN 13:
978-0-13446-914-0
Chapter P - Section P.4 - Polynomials - Exercise Set - Page 56: 52
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