x²+1/x²= x+1/x+7/4
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Step-by-step explanation:
x^2+1 /x^2 = 4 (x+1) / x+7
x^2+1 /x^2 = 4x+4/x+7
( x^2+ 1)(x+7) = (4x+4)(x^2)
x^3 +7x^2+x+7 = 4x^3 + 4x^2
4x^3 - x^3+ 4x^2 - 7x^2 -x = 7
3x^3 - 3x^2 -x = 7
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