Question

x - 6 = √x

Answer 1

square both sides, what do u get ?

Answer 2

x-6= √x
(x- 6)^2=x
x^2- 12x- 36=x
x^2-13x-16=0
(x+ 4)(x- 9) = 0
x+4 = 0 x-9 = 0
x =-4 ,x = 9


-4 – 6 = √(-4)
-10≠√(-4)

9-6 = √9
3 = 3