求化简 (1/(x-11)-1/(x+11))·(x^2-121)/x

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求化简 (1/(x-11)-1/(x+11))·(x^2-121)/x
求化简 (1/(x-11)-1/(x+11))·(x^2-121)/x

求化简 (1/(x-11)-1/(x+11))·(x^2-121)/x

碰到个笨蛋。