根号指数计算问题在线等~~1、(
1、
(8a^(-3)/(27b^6)^(-1/3)
=3b^2/(2a^(-1))
=(3/2)ab^2
2、
(3^(1/2)/6)^(1/3)*9^(1/3)
=3^(1/6)*6^(-1/3)*3^(2/3)
=3^(1/6+2/3)*2^(-1/3)*3^(-1/3)
=3^(1/6+2/3-1/3)*2^(-1/3)
=3^(1/2)*2^(-1/3)
=3^(1/2)*2^(2/3)/2
3、
x*(x^(1/2)/x^(1/6))*(x^(1/3))^2
=x*x^(1/2)*x^(-1/6)*x^(2/3)
=x(1+1/2-1/6+2/3)
=x^2
4、
(a^(1/...全部
1、
(8a^(-3)/(27b^6)^(-1/3)
=3b^2/(2a^(-1))
=(3/2)ab^2
2、
(3^(1/2)/6)^(1/3)*9^(1/3)
=3^(1/6)*6^(-1/3)*3^(2/3)
=3^(1/6+2/3)*2^(-1/3)*3^(-1/3)
=3^(1/6+2/3-1/3)*2^(-1/3)
=3^(1/2)*2^(-1/3)
=3^(1/2)*2^(2/3)/2
3、
x*(x^(1/2)/x^(1/6))*(x^(1/3))^2
=x*x^(1/2)*x^(-1/6)*x^(2/3)
=x(1+1/2-1/6+2/3)
=x^2
4、
(a^(1/2)+b^(1/2))^2
=a+2(ab)^(1/2)+b
5、
(a^(1/2)-b^(1/2))^2
=a-2(ab)^(1/2)+b。
收起