Tolong di bantuh jawab kak

Ini ya jawabannya......

a = 4
b = 1/2
c = 1

a^(-2) × b^(-5) × c^3
-------------------------------- =
a^(-4) × b^(-3) × c^(-1)

a^(-2-(-4)) × b^(-5-(-3)) × c^(3-(-1))

= a^(-2+4) × b^(-5+3) × c^(3+1)

= a^2 × b^(-2) × c^4

.....a^2 × c^4
= -------------------
.........b^2
....4^2 × 1^4
= ----------------
..........(1/2)^2

....16 × 1
= ----------
.......1/4

.......16
= --------
......1/4

= 16 × 4
= 64 (D)