Answer
$(2y-3)^2$
Work Step by Step
Treat $2y-1$ as a single unit and use the formula $a^2-2ab+b^2=(a-b)^2$, we have
$(2y-1)^2-4(2y-1)+4=(2y-1-2)^2=(2y-3)^2$
Precalculus (6th Edition)
by Lial, Margaret L.; Hornsby, John; Schneider, David I.; Daniels, Callie
Published by
Pearson
ISBN 10:
013421742X
ISBN 13:
978-0-13421-742-0
Chapter R - Review of Basic Concepts - R.4 Factoring Polynomials - R.4 Exercises - Page 44: 96
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