Evaluate. 3^8a^10b^-5c^2/3^12a^7b^-3c^-2

Question

a=4, b= 8 c=3

Answer 1

3^8 a^10 b^-5 c^2
----------------------
3^12 a^7 b^-3 c^-2

a^3 c^4
-----------
3^4 b^2

4^3 3^4
---------- = 4^3/8^2 = 1
3^4 8^2