Question

1.nyatakan dalam pangkat positip
(5^-4 mn^-5)^2/5^-7 m^-6 n^4...

Answer 1

= [ 5^-5 . m^2. n^-10 ] / [ 5^-7. m^-6. n^4 ]
= [5^-5. 5^7. m^2.m^6] / (n^10 . n^4)
= [ 5^2. m^8] / [ n^14 ]

Answer 2

(5^-4.mn^-5)^2 / 5^-7m^-6n^4
5^-8.m^2.n^-10 / 5^-7.m^-6.n^4
5^7.m^2.m^6 / 5^8.n^10.n^4
5^7.m^12 / 5^8.n^14