计算3a^2bc乘(-2abc^2)-12a^5b^4c^7除以(-4a^2b^2c^4)
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计算3a^2bc乘(-2abc^2)-12a^5b^4c^7除以(-4a^2b^2c^4)计算3a^2bc乘(-2abc^2)-12a^5b^4c^7除以(-4a^2b^2c^4)计算3a^2bc乘(
计算3a^2bc乘(-2abc^2)-12a^5b^4c^7除以(-4a^2b^2c^4)
计算3a^2bc乘(-2abc^2)-12a^5b^4c^7除以(-4a^2b^2c^4)
计算3a^2bc乘(-2abc^2)-12a^5b^4c^7除以(-4a^2b^2c^4)
3a^2bc乘(-2abc^2)-12a^5b^4c^7除以(-4a^2b^2c^4)
=-6a^3b^2c^3-3a^3b^2c^3
=-9a^3b^2c^3