Answer
$81x^4+108x^3+54x^2+12x+1$
Work Step by Step
Based on the Binomial Theorem, we have
$(3x+1)^4=(3x)^4+4(3x)^3+6(3x)^2+4(3x)+1=81x^4+108x^3+54x^2+12x+1$
Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (3rd Edition)
by Sullivan III, Michael
Published by
Pearson
ISBN 10:
0-32193-104-1
ISBN 13:
978-0-32193-104-7
Chapter 11 - Sequences; Induction; the Binomial Theorem - Section 11.5 The Binomial Theorem - 11.5 Assess Your Understanding - Page 857: 21
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