`a, 474747/656565 = {474747 ÷ 10101}/{656565 ÷ 10101} = 47/65`
`b, {(2^3)^5 . 3^9}/{6^6 . 2^5 . 9}`
`= {2^15 . 3^9}/{2^6. 3^6 . 2^5 . 3^2}`
`= {2^15 . 3^9}/{2^11. 3^8}`
`= 48`
`c,{4^11 . 9^3 . 2^3}/{6^6 . 2^10}`
`={2^22 . 3^6 . 2^3}/{2^6. 3^6 . 2^10}`
`={2^25 . 3^6 }/{2^16. 3^6}`
`=512`
`d, {100^5 . 3^2}/{5^25 . 6^4}`
`= {5^10 .2^10 .3^2}/{5^25 . 2^4. 3^4}`
`= 2^6/{5^15. 3^2}`
Học tốt !