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Question

To remove the second term of the equation x48x3+x2x+3=0, diminish the root of the equation by

A
1
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B
2
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C
3
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D
4
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Solution

The correct option is B 2
Suppose the roots of the equation are α,β,γ and δ
"we have to remove the second term of the equation means the sum of the roots should be zero"
In this equation sum of the roots is
α+ β+ γ+ δ=8
Now we can see if we subtract 2 from each roots, then the sum of the roots will be zero
(α2)+ (β2)+ (γ2)+ (δ2)=88=0
So we can conclude that if we diminish the roots of the equation by two then the second term of the equation will be removed.
Hence, option B is correct.

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