数学达人(a+b分之2ab²)³除以(a²-b²分之ab³)乘以{2(a-b)分之1}²
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数学达人(a+b分之2ab²)³除以(a²-b²分之ab³)乘以{2(a-b)分之1}²
数学达人(a+b分之2ab²)³除以(a²-b²分之ab³)乘以{2(a-b)分之1}²
数学达人(a+b分之2ab²)³除以(a²-b²分之ab³)乘以{2(a-b)分之1}²
(a+b)^2 (a-b) 分之2
(a+b)^2(a-b)分之2a^2b^2