449. Упростите выражение: B) (x4)2. (x5)3; г) (x2)3. (x3)5;

в) (x⁴)² ⋅ (x⁵)³ = x^(4*2) ⋅ x^(5*3) = x⁸ ⋅ x¹⁵ = x^(8+15) = x²³ г) (x²)³ ⋅ (x³)⁵ = x^(2*3) ⋅ x^(3*5) = x⁶ ⋅ x¹⁵ = x^(6+15) = x²¹