if x-1/x is9 then find xpower2+1/xpower2
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Answer: 322
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x-1/x=9
x^2-(1/x)^2=?
(x-1/x)^2=x^2+(1/x)^2+2*x*1/x
(9^2)=x^2+(1/x)^2+2
81=x^2+(1/x)^2+2
81-2=x^2+(1/x)^2
79= x^2+(1/x)^2
I hope this helps
Please mark me as the brainiest
x^2-(1/x)^2=?
(x-1/x)^2=x^2+(1/x)^2+2*x*1/x
(9^2)=x^2+(1/x)^2+2
81=x^2+(1/x)^2+2
81-2=x^2+(1/x)^2
79= x^2+(1/x)^2
I hope this helps
Please mark me as the brainiest
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