约分:(a²+a)(2a²-5a+3)分之(3a-2a²)(3-2a-a²)
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约分:(a²+a)(2a²-5a+3)分之(3a-2a²)(3-2a-a²)
约分:(a²+a)(2a²-5a+3)分之(3a-2a²)(3-2a-a²)
约分:(a²+a)(2a²-5a+3)分之(3a-2a²)(3-2a-a²)
(3a-2a²)(3-2a-a²)/[(a²+a)(2a²-5a+3)]
=[a(2a-3)(a+3)(a-1)]/[a(a+1)(2a-3)(a-1)]
=(a+3)/(a+1)