Question 304760
{{{ sqrt(3 - 2x) = x }}}

{{{ 3 - 2x = x^2 }}}

{{{ x^2 + 2x - 3 = 0 }}} 

{{{ (x + 3)(x - 1) = 0 }}} 

x + 3 = 0 , x = -3 
or 
x - 1 = 0 , x = 1 

Answer: x = 1 or - 3