[(3^4)^5×3^8]:(3^5)^5=
[3^(4x5) x 3^8] : 3^(5x5) =
[3^20 x 3^8] : 3^25 =
3^(20+8) : 3^25 =
3^28 : 3^25 =
3^(28-25) =
3^3 =
27
[ ( 3⁴ )⁵ x 3⁸ ] : ( 3⁵ ) ⁵ = 27
= ( 3²⁰ x 3⁸ ) : 3²⁵ =
= 3 ⁽ ²⁰ ⁺ ⁸ ⁾ : 3 ²⁵
= 3²⁸ : 3²⁵ =
= 3 ⁽ ²⁸ ⁻ ²⁵ ⁾ =
= 3³=
= 27
