(-4/7a^4B^6c^5)^3+(-3./7a^3b^5c^4)^3*(abc)^3 计算,.
问题描述:
(-4/7a^4B^6c^5)^3+(-3./7a^3b^5c^4)^3*(abc)^3 计算,.
答
(-4/7a^4b^6c^5)^3+(-3/7a^3b^5c^4)^3*(abc)^3
=-64/343a^12b^18c^15-(3/7a^3b^5c^4*abc)^3
=-64/343a^12b^18c^15-27/343a^12b^18c^15
=-91/343a^12b^18c^15
=-13/49 a^12b^18c^15