Question

If the zeroes of the quadratic polynomial ax2

+ bx + c, c ≠ 0 are equal, then

(A) c and a have opposite signs (B) c and b have opposite signs

(C) c and a have the same sign (D) c and b have the same sign​

Answer 1

Answer:

the zeroes of a quadratic polynomial are equal when the discriminant is equal to 0

i.e. D = 0

b² - 4ac = 0

4ac = b²

ac = b²/4 > 0 (square of any positive or negative number is positive )

ac > 0

For ac > 0, a and c must have the same sign

i.e., either a > 0 and c > 0 or a < 0 and c < 0

Answer 2

Answer:

hey i got same question but the answer is d