①(m-n)^2(n-m)^2(n-m)^3

问题描述:

①(m-n)^2(n-m)^2(n-m)^3
②-(3x^2 · y^2)^3-(-3x)^2 ·(-y)^4 ·(x^2 y)^2
③(-2a)^6-(-3a)^2+[-(2a)^2]^3
④若a^n-1 ·a^m+n=a^6,且m-2n=1.求m^n的值
⑤若a-b=2,a-c=1.求(2a-b-c)^2+(c-a)^2的值

①(m-n)^2(n-m)^2(n-m)^3=(n-m)^2(n-m)^2(n-m)^3=(n-m)^7②-(3x^2 · y^2)^3-(-3x)^2 ·(-y)^4 ·(x^2 y)^2=-27x^6*y^6-9x^2*y^4*x^4*y^2=-27x^6*y^6-6x^6*y^6=-33x^6*y^6③(-2a)^6-(-3a)^2+[-(2a)^2]^3=64a...