Question

!!ПОМОГИТЕ!!!!!!!!!!!!!!!!!!!!!!МНОГО БАЛЛОВ!!

Answer 1

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