-4 SR(x + 9) = 20? Please help me!
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-4 SR(x + 9) = 20? Please help me!

[From: ] [author: ] [Date: 11-08-18] [Hit: ]
......
I need help finding x, and if the solution is extraneous or not. The only question out of 10 I cant solve.

please help.

-
Divide both sides by (-4):

sqrt(x+9) = -5

Square both sides:
(x+9) = (-5)^2

x+9 = 25
x = 16
1
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