Verified answer

Square both the sides: 6x-8=x^2

Now, Bring the whole expression to L.H.S: x^2-6x+8=0

Now, The expression is a quadratic expression, all you need is to factorize it: so,

x^2-4x-2x+8=0

x(x-4)-2(x-4)=0

(x-4)(x-2)=0

Either x-4=0 ,or, x-2=0.

so, x=4 or x=2

ANSWER: x=4,2

i hope this helps :)