a, x^2-3x+2=0 b, -x^2+5x-6=0 c, 4x^2-12x+5=0 d, 2x^2+5x+3=0 e, x-12+4x=25+2x-1 f, x+2x+3x-19= 3x+5 g, 7-(2x+4)= -(x+4) Giúo mk vs
a, x^2-3x+2=0 b, -x^2+5x-6=0 c, 4x^2-12x+5=0 d, 2x^2+5x+3=0 e, x-12+4x=25+2x-1 f, x+2x+3x-19= 3x+5 g, 7-(2x+4)= -(x+4) Giúo mk vs