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Question

The roots of the equation 4x224x3+57x2+18x45=0 if one of them is 3+i6 , are


A

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B

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C

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D

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Solution

The correct option is C


x2 – 6x + 15 = 0 is quadratic corresponding to roots 3±i6 and dividing the given equation by this, we get 4x23=0x=±32


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