College Algebra 7th Edition

Published by Brooks Cole
ISBN 10: 1305115546
ISBN 13: 978-1-30511-554-5

Chapter 3, Polynomial and Rational Functions - Section 3.1 - Quadratic Functions and Models - 3.1 Exercises - Page 288: 35


Minimum (-3)

Work Step by Step

Putting this in vertex form, $$2x^2+4x-1=2(x^2+2x+1)-3=2(x+1)^2-3$$ Since a square is nonnegative, the minimum value is $\boxed{-3}$
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