Question

Ubahlah menjadi bentuk pangkat positif.

a. 5(2x)^-4
b. (3/xy)^-2
c. ab^-2.ba^-2.1/(ab)^-3
d. (3a^6 b^-5/81a^9 b^-2)^-1

Answer 1

A) 5.1/(2x)^4 = 5.1/2^4.x^4 = 5/16x^4

b) (3/xy)^-2 = 1/(3xy)² = 1/3².x².y² = 1/9x²y²

c) ab^-2 . ba^-2 . 1/(ab)^-3
= 1/ab² . 1/ba² . 1/1/(ab)^3
= 1/ab² . 1/ba² . 1 . a^3b^3
= a^3b^3 / a^3b^3
atau
= 1