[latex] frac{5x-3}{ x^{2} -3x} + frac{2x}{3-x} = frac{5x-3}{x(x-3)} - frac{2x}{x-3} = frac{5x-3-2 x^{2} }{x(x-3)} = \ \ - frac{2 x^{2} -5x+3}{x(x-3)} \ \ D=25-24=1 \ sqrt{x} D=1 \ x1=(5-1)/4=1 \ x2=(5+1)/4=1.5 \ \ - frac{2(x-1.5)(x-1)}{x(x-3)} [/latex]