Multiple Choice Questions on If x 1 x 2 then what is value of 1 x3 x6 ........ for SSC CHSL Preparation

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Multiple Choice Questions

If x 1 x 2 then what is value of 1 x3 x6 ........

Quantitative Aptitude (CHSL) Algebra
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    If (x+ 1/x)= -2 then what is value of  1 + x3 +x6

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    Explanation:

    x+1/x=-2
    x2+1=-2x
    x2+2x+1=0
    (x+1)2=0
    x+1=0
    x=-1
    1+x3+x6
    =1+(-1)3+(-1)6=1

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