(3a^2)^-3/b^2 * 81a^8b=(-3a^2b+a^3)
Объяснение:
(3a²)^(-3)/b² * 81a^8b= (3a²)^(-3)/b * 81a^8=
=(1/3a²)³ *81a^8 / b =1/27a^6 *81a^8 / b=
=81a^8/27a^6 :b=3a^(8-6) :b= 3a²/b
(3a^2)^-3/b^2 * 81a^8b=(-3a^2b+a^3)
Объяснение:
(3a²)^(-3)/b² * 81a^8b= (3a²)^(-3)/b * 81a^8=
=(1/3a²)³ *81a^8 / b =1/27a^6 *81a^8 / b=
=81a^8/27a^6 :b=3a^(8-6) :b= 3a²/b