Algebra 1

Published by Prentice Hall
ISBN 10: 0133500403
ISBN 13: 978-0-13350-040-0

Chapter 9 - Quadratic Functions and Equations - 9-5 Completing the Square - Mixed Review - Page 566: 64



Work Step by Step

Given: $a=2,b=5,c=-7$ Plug in $b^2-4ac$ to get the result. $b^2-4ac=(5)^2-4(2)(-7)$ $=25+56$ $=81$
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