Answer
x=0
Work Step by Step
First, to find your answer you must add 10 on both sides.
$x^2-10=-10
x^2-10+10=-10+10
x^2=0 $
Then square root on both sides and the square root of 0 is 0 so
x=0
Algebra 1
by Hall, Prentice
Published by
Prentice Hall
ISBN 10:
0133500403
ISBN 13:
978-0-13350-040-0
Chapter 9 - Quadratic Functions and Equations - 9-3 Solving Quadratic Equations - Practice and Problem-Solving Exercises - Page 551: 18
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