Question

If zeros of ax2+bx+c=0 ; are equal then show that ac is greater than 0?

Answer 1

Answer:

Step-by-step explanation:

If the equation has equal roots the discriminant is equal to zero

b^2_4ac=0

b^2=4ac

ac=b^2/4

as b^2 is always positive

Hence ac is always greater than 0