EC-GATE 2020 Question 9: Quadratic Equation with Equal Roots (β) | Examprev

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EC > GATE 2020 > Algebra

a, b, c are real numbers. The quadratic equation ax²-bx+c=0 has equal roots, which is β, then

A

β=b/a

B

β²=ac

C

β³=bc/(2a²)

D

b²≠4ac

Correct : c

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