If x + 1/x = 7
Find x square + 1/x square
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x + 1 /x =7
(x+1/x)^2=(x^2+2×x×1/x+1/x^2 )
7^2=x^2+2+1/x^2
49=x^2+1/x^2+2
49-2=x square+1/x square
47=x square+1/x square
(x+1/x)^2=(x^2+2×x×1/x+1/x^2 )
7^2=x^2+2+1/x^2
49=x^2+1/x^2+2
49-2=x square+1/x square
47=x square+1/x square
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