admin百科知識 2022-02-12 22:47:26 (a+b+1)的立方-(a+b)的立方等於?(a b 1)的立方-(a b)的立方等於?網友廻答:匿名網友(a b 1)^3-(a b)^3=((a b 1)-(a b))((a b 1)^2 (a b 1)(a b) 1)=(a b 1)(2a 2b 1) 1=2a^2 2b^2 4ab 3a 3b 2 db標簽 生活常識_百科知識_各類知識大全»(a+b+1)的立方-(a+b)的立方等於?
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