Toán Lớp 8: thực hiện phép tính:
(x+1/x^2-x)+(x+2/1-x^2)-(1/x^3-x)
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Toán Lớp 8: thực hiện phép tính:
(x+1/x^2-x)+(x+2/1-x^2)-(1/x^3-x)
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