Question

use sqrt property to solve:
(x-7)^2=8

Answer 1

x = 7 + 2sqrt2
x = 7 - 2sqrt2

Answer 2

(x-7)^2=8
\[x-7=\pm \sqrt{8}=\pm2\sqrt{2}\]
x=\[7+2\sqrt2 , 7-2\sqrt2\]