SOLUTION: how do you solve x-4 multiply the square root of x equals 32

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Question 661089: how do you solve x-4 multiply the square root of x equals 32
Found 2 solutions by lynnlo, ewatrrr:
Answer by lynnlo(4176) About Me  (Show Source):
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

x-4sqrt%28x%29+=+32   Let s^2 = x

 s^2 - 4s - 32 = 0

(s - 8)(s+4) = 0

(s+4) = 0 , s = -4, s^2 = x = 16  |||tossing out as an extraneous solution

0r

(s - 8) = 0 , s= 8 and s^2 = x+=+64