Algebra and Trigonometry 10th Edition

Published by Cengage Learning
ISBN 10: 9781337271172
ISBN 13: 978-1-33727-117-2

Chapter 2 - Cumulative Test for Chapters P-2 - Page 236: 18


$x=3$ $x=-1$

Work Step by Step

$-2x^2+4x+6=0~~$ (Divide both sides of the equation by $-2$): $x^2-2x-3=0~~$ (Use: $-2x=x-3x$) $x^2+x-3x-3=0$ $x(x+1)-3(x+1)=0$ $(x-3)(x+1)=0$ $x-3=0$ $x=3$ $x+1=0$ $x=-1$
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