SOLUTION: Solve for x: x+4=4 sqrt(x+1) I am pretty sure the answer is -4/5 but I need to verify that I am correct and that I am doing it correctly. Any help is good help! Thanks!

Algebra ->  Square-cubic-other-roots -> SOLUTION: Solve for x: x+4=4 sqrt(x+1) I am pretty sure the answer is -4/5 but I need to verify that I am correct and that I am doing it correctly. Any help is good help! Thanks!      Log On


   

Question 379918: Solve for x: x+4=4 sqrt(x+1)
I am pretty sure the answer is -4/5 but I need to verify that I am correct and that I am doing it correctly. Any help is good help!
Thanks!
Answer by user_dude2008(1862) About Me  (Show Source):
You can put this solution on YOUR website!
x+4=4 sqrt(x+1)

(x+4)^2=16(x+1)

x^2+8x+16=16x+16

x^2-8x=0

x(x-8)=0

x=0 or x-8=0

x=0 or x=8

Answers: x=0 or x=8