Question

solve the equation for x:

Answer 1

square both sides of the equation to eliminate the radical and then expand the right side of the equation

Answer 2

remember that
\[\sqrt{x}\] = (x)^(1/2)

therefore

((x)^(1/2))^(2) = x^(2/2) = x

and that if you do the same thing to both sides of an equation the equation remains equal