1.(-1/2x)^7/(-1/2x)2.a^m+2/a^m+13.(-c^2)^2n4.(x+a)(x+b)5.(3mn+1)(3mn-1)-8m^2n^2
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1.(-1/2x)^7/(-1/2x)2.a^m+2/a^m+13.(-c^2)^2n4.(x+a)(x+b)5.(3mn+1)(3mn-1)-8m^2n^21.(-1/2x)^7/(-1/2x)2.
1.(-1/2x)^7/(-1/2x)2.a^m+2/a^m+13.(-c^2)^2n4.(x+a)(x+b)5.(3mn+1)(3mn-1)-8m^2n^2
1.(-1/2x)^7/(-1/2x)
2.a^m+2/a^m+1
3.(-c^2)^2n
4.(x+a)(x+b)
5.(3mn+1)(3mn-1)-8m^2n^2
1.(-1/2x)^7/(-1/2x)2.a^m+2/a^m+13.(-c^2)^2n4.(x+a)(x+b)5.(3mn+1)(3mn-1)-8m^2n^2
1.(-1/2x)^7/(-1/2x)=(1/2x)^6=1/(64x^6)
2.a^m+2/a^m+1=［a^(m/2)+√2/a^(m/2)］^2+1-2√2
3.(-c^2)^2n=nc^4
4.(x+a)(x+b)=x^2+ax+bx+ab
5.(3mn+1)(3mn-1)-8m^2n^2=9m^2n^2-8m^2n^2=m^2n^2
不会
1.(-1/2x)^6=1/64x^6
2.（a+2/a）^m+1
3.c^4
4.x^2+xb+ax+ab
5.9 m^2 n^2-1-16^2n m^4n
饿。。。这些符号把我搞晕了，但应该是对的，洗洗，采用我的吧！！！！！！！！！！
我可是最早的哦
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