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Question

Let f(x)=ax2+bx+c. Then, match the following.
a. Sum of roots of f(x) = 01.–bab. Product of roots of f(x) = 02.cac. Roots of f(x) = 0 are real and distinct3.b2–4ac=0d. Roots of f(x) = 0 are real and identical.4.b2–4ac>0


A

a2, b1, c3. d4

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B

a1, b2, c4, d3

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C

a3, c4, b2, d1

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D

a1, b2, c3, d4

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Solution

The correct option is B

a1, b2, c4, d3


For f(x) = ax2+bx+c,

a. Sum of roots of f(x) = 0 is equal to ba.

b. Product of roots of f(x) = 0 is equal to ca

c. Roots of f(x) = 0 are real and distinct, if D= b24ac> 0

d. Roots of f(x) = 0 are real and equal, if D= b24ac=0


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