Question

In quadratic equation ax2 + bx + C = 0, if discriminant is D=b2 - 4ac, then roots of the quadratic equation are :
(choose the correct alternative)
(1) Real and distinct, if D > 0
(2) Real and equal (i.e., repeated roots), if D = 0.
(3) Non-real (i.e. imaginary), if D< 0 (4) All of the above are correct​

Answer 1

Answer:

$quadratic \: equation = ax^{2} + bx + c = 0$

Discriminent

$d= b ^{2} - 4ac$

1) Now if d = 0 then the roots of the equation is real and equal .

2) If d > 0 roots are real and distinct .

3) If d <0 then roots are unreal or not imaginery .