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Question

The equation whose roots are the negatives of the roots of the equation, x7+3x5+x3x2+7x+2=0, is

A
x7+3x5+x3x27x2=0
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B
x7+3x5+x3+x2+7x2=0
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C
x7+3x5+x3x27x+2=0
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D
x7+3x5+x3x2+7x2=0
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Solution

The correct option is A x7+3x5+x3+x2+7x2=0
We get equation whose roots are negative of x7+3x5+x3x2+7x+2=0 by replacing xx
(x)7+3(x)5+(x)3(x)2+7(x)+2=0x73x5x3x27x+2=0x7+3x5+x3+x2+7x2=0

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