!!ПОМОГИТЕ!!!!!!!!!!!!!!!!!!!!!!МНОГО БАЛЛОВ!!
2x^2 - 5x - 3 = 0 D = 25 + 4*3*2 = 25 + 24 = 49 x1 = ( 5 + 7)/4 = 12/4 = 3; x2 = ( 5 - 7)/4 = - 2/4 = - 1/2 = - 0,5