Упростите (-2/3а^3b^3)^6•(-2 1/4 ab)^3
(-2/3 a³b³)⁶ * (-2 1/4 ab)³ = 2⁶/3⁶ * a¹⁸b¹⁸ * (-3⁶/2⁶ * a³b³) = -a²¹b²¹