(5a⁷b⁶c⁸)⁵ : (5a⁴b³c x 5a³b²)

5^5 a^35 b^30 c^40
——————————
5^2 a^7 b^6 c

= 5^5-2 a^35-7 b^30-5 c^40-1
= 125 a^28 b^25 c^39

[tex](5a^7b^6c^8)^5:(5a^4b^3cX5a^3b^2) \\ =5^5a^{(7X5)}b^{(6X5)}c^{(8X5)}:5^2a^{(4+3)}b^{(3+2)}c \\ =5^5a^{35}b^{30}c^{40}:5^2a^{(4+3)}b^{(3+2)}c \\ =5^5a^{35}b^{30}c^{40}:5^2a^{7}b^{5}c \\ =5^{(5-2)}a^{(35-7)}b^{(30-5)}c^{(40-1)} \\ = 5^3a^{28}b^{25}c^{39}\\ =125a^{28}b^{25}c^{39}[/tex]