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Question

If 23 is a root of the quadratic equation x2+2(31)x+323=0 then the second root is

A
32
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B
3
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C
2+3
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D
3
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Solution

The correct option is C 3

For the equation x2+2(31)x+323=0

One of the roots is 23 ,

Let the second root be x

Sum of roots ba=2(31)=23+2
23+x=23+2
x=3

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