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[(a²+2ab)²-b⁴]÷(a+b)² 因式分解
人气:246 ℃ 时间:2020-01-30 13:00:19
解答
[(a²+2ab)²-b⁴]÷(a+b)² =[(a²+2ab+b²)*(a²+2ab-b²)]÷(a+b)² =[(a+b)²X(a²+2ab-b²)]÷(a+b)² =(a²+2ab-b²)
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