x+1/x=9 and x^2+(1/x^2)=53 then x-1/x=
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x+1/x=9
therefore 9x=x+1
8x=1
x=1/8
therfore x-1/x=1/8-1/1/8=-7.
therefore 9x=x+1
8x=1
x=1/8
therfore x-1/x=1/8-1/1/8=-7.
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