Algebra: A Combined Approach (4th Edition)

Published by Pearson
ISBN 10: 0321726391
ISBN 13: 978-0-32172-639-1

Chapter 13 - Section 13.3 - Solving Nonlinear Systems of Equations - Practice: 1

Answer

x=1 or x=-3

Work Step by Step

x+y=-1 (use the second equation solve for y ) y=-1-x Replace y with -1-x in the first equation, and then solve for x $x^{2}-2(-1-x)=5$ $x^{2}+2+2x=5$ $x^{2}+2x-3=0$ $(x-1)(x+3)=0$ x=1 or x=-3
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