1. (125)^-2/3 – (100)^-3/2 =

1. (5^3)^-2/3-(10^2)^-3/2
= 5^-6/3-10^-6/2
=1/(5^6*3)-1/(10^6)*2
2.= (3^3)/5
3.(90)^(1/2)/(72)^(1/2)
= (9*10)^(1/2)/(36*2)^(1/2)
=3(10^(1/2))/6(2^(1/2))
maksud ^(1/2) itu akar
4. akar 125
= (5*25)^(1/2)
= 5(5^(1/2))
maksudnya 5 akar 5
5.=(5^(1/2))^5
= (5^(1/2))^4*(5^(1/2))
=5^2*(5^(1/2))
=25(5^(1/2))
25 akar 5
6.=(2^3)^(1/9)
=2^(1/3)
akar 3 dari 2