初一多项式运算(-1/3ab)^3 +1/3 a^3 b^3=________.(3a^2)^3 +(a^2)^2*a^2=________.已知2a^3 b^2n c^4=-3,则8a^9 b^6n c^12=_______.计算:(-2a)^6 -(-3a^3)^2 -[-(2a)^2]^3=_________.
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初一多项式运算(-1/3ab)^3 +1/3 a^3 b^3=________.(3a^2)^3 +(a^2)^2*a^2=________.已知2a^3 b^2n c^4=-3,则8a^9 b^6n c^12=_______.计算:(-2a)^6 -(-3a^3)^2 -[-(2a)^2]^3=_________.
初一多项式运算
(-1/3ab)^3 +1/3 a^3 b^3=________.
(3a^2)^3 +(a^2)^2*a^2=________.
已知2a^3 b^2n c^4=-3,则8a^9 b^6n c^12=_______.
计算:(-2a)^6 -(-3a^3)^2 -[-(2a)^2]^3=_________.
初一多项式运算(-1/3ab)^3 +1/3 a^3 b^3=________.(3a^2)^3 +(a^2)^2*a^2=________.已知2a^3 b^2n c^4=-3,则8a^9 b^6n c^12=_______.计算:(-2a)^6 -(-3a^3)^2 -[-(2a)^2]^3=_________.
(-1/3ab)^3 +1/3 a^3 b^3
=-1/27 a^3 b^3+1/3 a^3 b^3
=8/27 a^3 b^3
(3a^2)^3 +(a^2)^2*a^2
=27a^6+a^6
=28a^6
已知2a^3 b^2n c^4=-3
则8a^9 b^6n c^12
=(2ab^2n c^4)^3
=(-3)^3
=-27
计算:(-2a)^6 -(-3a^3)^2 -[-(2a)^2]^3
=64a^6-9a^6+64a^6
=119a^6
8/27(ab)^3, 28a^6, 27, 119a^6.