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Question

The quadratic equation in x such that the arithmetic mean of the roots is p and the geometric mean is q is

A

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B

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C
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D

none of these

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Solution

The correct option is D

none of these


A quadratic equation can be written as

x2 - (sum of roots)x + (product of roots) =0

Arithmetic mean(p) = Sum of roots2 sum of roots = 2p

Geometric mean (q) = (Product of roots) product of roots = q2

The required equation is x22px+q2=0


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