Answer
$x=\sqrt{23},-\sqrt{23}$
Work Step by Step
$x^2-23=0$
Step 1 - we must add 23 to both sides of the equation:
$x^2 = 23$
Step 2 - we must take the square root of both sides of the equation:
$x=\pm\sqrt{23}
\\x=\sqrt{23},-\sqrt{23}$
Algebra 2 Common Core
by Hall, Prentice
Published by
Prentice Hall
ISBN 10:
0133186024
ISBN 13:
978-0-13318-602-4
Chapter 14 - Trigonometric Identities and Equations - Get Ready! - Page 901: 2
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