Bantuin dong please:

1]
a = 32
b = 27
[4a^(-2/5)]×[5b^(1/3)]
= [4(32)^(-2/5)]×[5(27)^(1/3)]
= [4(2^5)^(-2/5)]×[5(3^3)^(1/3)]
= [4(2)^(-2)]×[5(3)]
= [2^2.2^(-2)]×15
= [2^0]×15
= 1×15
= 15

2] a^(-2) b^8 c^(-10)
....---------------------------
......a^12 b^(-4) c^6

= a^(-2-12) b^(8-(-4)) c^(-10-6)

= a^(-14) b^12 c^(-16)

...........b^12
= ------------------
........a^14 c^16


3]
......27×3^(-2)×3
.....-------------------
.........81×9^(-2)

........3^3×3^(-2)×3
....= ------------------------
...........3^4×(3^2)^(-2)

........3^2
= ---------------
.....3^4×3^(-4)

...........3^2
= ---------------
...........3^0

= (3^2)/1
= 3^2
= 9