SOLUTION: Solve for x: x+4=4√(x+1) I'm not sure how to do this problem. I first subtracted 4 from both sides to get X on the left and after that I am not sure what to do.

Algebra ->  Radicals -> SOLUTION: Solve for x: x+4=4√(x+1) I'm not sure how to do this problem. I first subtracted 4 from both sides to get X on the left and after that I am not sure what to do.       Log On


   

Question 385235: Solve for x: x+4=4√(x+1)
I'm not sure how to do this problem. I first subtracted 4 from both sides to get X on the left and after that I am not sure what to do.
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
No, first step square both sides.
x%2B4=4%2Asqrt%28x%2B1%29
%28x%2B4%29%5E2=16%28x%2B1%29
x%5E2%2B8x%2B16=16x%2B16
x%5E2-8x=0
x%28x-8%29=0
Two solutions:
highlight%28x=0%29
.
.
x-8=0
highlight%28x=8%29
.
.