【回答后给分】【初一下】计算:①3x²·4x=____ ②- 4/5a³·(- 2/5a)²=___③(-3mn²)·(2m²n)=___ ④(2.5×10²)×(4×10³)=______,3a²b·2abc· 1/3 abc²=____⑤1/2 xy²·6x²y
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![【回答后给分】【初一下】计算:①3x²·4x=____ ②- 4/5a³·(- 2/5a)²=___③(-3mn²)·(2m²n)=___ ④(2.5×10²)×(4×10³)=______,3a²b·2abc· 1/3 abc²=____⑤1/2 xy²·6x²y](/uploads/image/z/1987312-40-2.jpg?t=%E3%80%90%E5%9B%9E%E7%AD%94%E5%90%8E%E7%BB%99%E5%88%86%E3%80%91%E3%80%90%E5%88%9D%E4%B8%80%E4%B8%8B%E3%80%91%E8%AE%A1%E7%AE%97%EF%BC%9A%E2%91%A03x%26%23178%3B%C2%B74x%3D____+%E2%91%A1-+4%2F5a%26%23179%3B%C2%B7%EF%BC%88-+2%2F5a%EF%BC%89%26%23178%3B%3D___%E2%91%A2%28-3mn%26%23178%3B%29%C2%B7%282m%26%23178%3Bn%29%3D___+%E2%91%A3%282.5%C3%9710%26%23178%3B%29%C3%97%284%C3%9710%26%23179%3B%29%3D______%2C3a%26%23178%3Bb%C2%B72abc%C2%B7+1%2F3+abc%26%23178%3B%3D____%E2%91%A41%2F2+xy%26%23178%3B%C2%B76x%26%23178%3By)
【回答后给分】【初一下】计算:①3x²·4x=____ ②- 4/5a³·(- 2/5a)²=___③(-3mn²)·(2m²n)=___ ④(2.5×10²)×(4×10³)=______,3a²b·2abc· 1/3 abc²=____⑤1/2 xy²·6x²y
【回答后给分】【初一下】计算:①3x²·4x=____ ②- 4/5a³·(- 2/5a)²=___
③(-3mn²)·(2m²n)=___ ④(2.5×10²)×(4×10³)=______,3a²b·2abc· 1/3 abc²=____⑤1/2 xy²·6x²y
【回答后给分】【初一下】计算:①3x²·4x=____ ②- 4/5a³·(- 2/5a)²=___③(-3mn²)·(2m²n)=___ ④(2.5×10²)×(4×10³)=______,3a²b·2abc· 1/3 abc²=____⑤1/2 xy²·6x²y
①12x的3次方 ②-125分之15a的5次方 ③-6m的3次方n的3次方 ④10的5次方 ,2a的4次方b的3次方c的3次方 ⑤3x的3次方y的3次方 请给予好评,