Question

2. The DISCRIMINANT of the
standard Quadratic eqn is?
1. b2-4ac=0
2.b2-4ac_0
3.b2-4ac
4. b2-4ac>0​

Answer 1

$\huge\bold\star\pink{Answer}$

If b2 - 4ac = 0 then the roots will be x = −b±02a = −b−02a, −b+02a = −b2a, −b2a. Clearly, −b2a is a real number because b and a are real. Thus, the roots of the equation ax2 + bx + c = 0 are real and equal if b2 – 4ac = 0......☺