Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (3rd Edition)

Published by Pearson
ISBN 10: 0-32193-104-1
ISBN 13: 978-0-32193-104-7

Appendix A - Review - A.3 Polynomials - A.3 Assess Your Understanding - Page A31: 76



Work Step by Step

We square (expand) the binomial to obtain: $$ (3x - 4)^2=(3x-4)(3x-4)=(3 x)^2+2\cdot (-4) \cdot 3 x+(-4)^2=9x^2-24x+16 .$$
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