Question

an equation of the form a x square + bx + c is equal to zero wear a b c are real number is not equal to zero is called a dash equation in the variable dash​

Answer 1

Answer:

Given equation ax

2

+bx+c=0

Determinant of equation should be positive for its roots to be real i.e, b

2

−4ac>0 but from the options we can see that only option D is right.

Because it reduces determinant to b

2

which is always positive.