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If x square + 1 by x square is equal to 7, find the value of x cube + 1 by x cube

Answer» X^2+1/x^2=7X^2+1=7x^21=6x^2X^2=1/6X=1/√6X^3+1/x^3=1/(√6)^3+1/1/(√6)^3=1+(6)^3/2 /1=1+(6)^3/2
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