Algebra 2 (1st Edition)

Published by McDougal Littell
ISBN 10: 0618595414
ISBN 13: 978-0-61859-541-9

Chapter 4 Quadratic Functions and Factoring - 4.7 Complete the Square - 4.7 Exercises - Mixed Review - Page 291: 74



Work Step by Step

$a=-5,b=3,c=2$ $ b^{2}-4ac\qquad$ ...substitute $-5$ for $a,\ 3$ for $b$ and $2$ for $c$. $=3^{2}-4\cdot(-5)\cdot 2\qquad$ ...evaluate $3^{2}$ $=9-4\cdot(-5)\cdot 2\qquad$ ...multiply before subtracting $=9+40$ $=49$
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