问几个数学题哈,帮帮忙啦~~ (初一下册的.《整式的除法》)1.(3a^2)^3*b^4-3(ab^2)^2*a^42.(-1/2xy)(2/3x^2y-3/2xy^2+6/5y)3.-2^2(1/2ab+b^2)-5a(a^2b-ab^2)4.(x^2+x+1)(x-1)

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问几个数学题哈,帮帮忙啦~~ (初一下册的.《整式的除法》)1.(3a^2)^3*b^4-3(ab^2)^2*a^42.(-1/2xy)(2/3x^2y-3/2xy^2+6/5y)3.-2^2(1/2ab+b^2)-5a(a^2b-ab^2)4.(x^2+x+1)(x-1)

问几个数学题哈,帮帮忙啦~~ (初一下册的.《整式的除法》)1.(3a^2)^3*b^4-3(ab^2)^2*a^42.(-1/2xy)(2/3x^2y-3/2xy^2+6/5y)3.-2^2(1/2ab+b^2)-5a(a^2b-ab^2)4.(x^2+x+1)(x-1)
问几个数学题哈,帮帮忙啦~~ (初一下册的.《整式的除法》)
1.(3a^2)^3*b^4-3(ab^2)^2*a^4
2.(-1/2xy)(2/3x^2y-3/2xy^2+6/5y)
3.-2^2(1/2ab+b^2)-5a(a^2b-ab^2)
4.(x^2+x+1)(x-1)

问几个数学题哈,帮帮忙啦~~ (初一下册的.《整式的除法》)1.(3a^2)^3*b^4-3(ab^2)^2*a^42.(-1/2xy)(2/3x^2y-3/2xy^2+6/5y)3.-2^2(1/2ab+b^2)-5a(a^2b-ab^2)4.(x^2+x+1)(x-1)
1 .24a^6b^4
2 .-1/3x^3y^2+3/4x^2y^3-3/5xy^2
3 .-5a^3b+5a^2b^2-2ab-4b^2
4 .x^3-1

b