√4c^3/9a^5*b=
问题描述:
√4c^3/9a^5*b=
答
4c^3/9a^5*b 这些全在根号里吧
√4c^3/9a^5*b
=√4c^3*ab/9a^5*b*ab
=√(2c)²abc/(3a³b)²
=(2c/3a³b)√(abc)