(8a^3)^1/3(16a²)^1\2 以及(25a^4)^1/2÷(5a^-2)²
问题描述:
(8a^3)^1/3(16a²)^1\2 以及(25a^4)^1/2÷(5a^-2)²
(8a^3)^1/3(16a²)^1/2 以及(25a^4)^1/2÷(5a^-2)²
请写出详细步骤来→_→
答
(8a^3)^1/3(16a²)^1/2
=2a * 4a
=8a^2
(25a^4)^1/2÷(5a^-2)²
=5a^2÷25a^-4
=1/5a^(2+4)
=1/5a^6么么哒=3=
顺便帮我把最后一道题解了吧= =
(25/36)^-3/2(25/36)^-2/3
=(1/3)[(25/36)^-2]
=(1/3)(36^2/25^2)
=(1/3)(36^2/25^2)
=432/625
题目没错吗最后面是-2分之3次方_(:з」∠)_
^-3/2(25/36)^(-3/2)
=[(25/36)^(-1/2)]^3
=(6/5)^3
=216/125