Solve the equation:

square root of 6x=square root of 8x+4 then -2

sqrt6x=sqrt(8x+4) -2

square each side.
6x=8x+4+4-4sqrt(8x+4)
4sqrt(8x+4)=2x+8
divide by 2
2sqrt( )=x+4
square both sides
2(8x+4)=x^2+8x+16
gather terms..
x^2-8x+8=0

x=(8+-sqrt(64-32))/2
check my math