Answer:
Step-by-step explanation:
I. If discriminant >0 then the quadratic equation has the roots x1 and x2 and
a) x1 and x2 are real numbers
b) x1≠x2
II. If discriminant =0 , then x1=x2 and is a real number
III. If discriminant < 0 the equation has complex roots , x1=a+bi ,
x2=a-bi , where i=V-1
