Answer:
There is one solutiom
Explanation:
sqrt(4x+15)=3(sqrt(x) )
divide each side by sqrt(x)
sqrt(4x+15)/sqrt(x) = 3
sqrt((4x+15/x)) = 3
square each side
(4x+15)/x = 3^2
(4x+15)/x = 9
multiply by x
4x+15 = 9x
subtract 4x on each side
15 = 5x
divide by 5
3=x