3 times the square root of x + 4 = x + 4

Question

solve this equation 3√x+4=x+4

Answer 1

3√x+4 = x+4

Subtract 4 from both sides to get

3√x =x

Divide both sides by 3 to get 

√x = x/3

Square both sides to get

x = x^2 / 9

Multiply both sides by 9 to get

9x = x^2

Rearrange to get

9x - x^2 = 0

Take x common to get

x(9 - x) = 0

So, x = 0 or 9