Precalculus: Mathematics for Calculus, 7th Edition

Published by Brooks Cole
ISBN 10: 1305071751
ISBN 13: 978-1-30507-175-9

Chapter 3 - Section 3.1 - Quadratic Functions and Models - 3.1 Exercises: 21

Answer

$2(x-5)^2 + 7$

Work Step by Step

$2x^2 - 20x + 57 = 2(x^2 -10x +5^2) + 57 - (2\times5^2) = 2(x-5)^2 + 57 - 50 = 2(x-5)^2 + 7$
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