1.-10x^2y-5xy^2+15xy;2.(2a+b)(2a-3b)+a(2a+b);3.5a^3b(a-b)^3-10a^4b^3(b-a)^24.(3a-4b)(7a-8b)+(11a-12b)(8b-7a);5.x(b+c-d)-y(d-b-c)-c-b+d.求快!在23:15之前6.(x+3)^2-(x+3)
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![1.-10x^2y-5xy^2+15xy;2.(2a+b)(2a-3b)+a(2a+b);3.5a^3b(a-b)^3-10a^4b^3(b-a)^24.(3a-4b)(7a-8b)+(11a-12b)(8b-7a);5.x(b+c-d)-y(d-b-c)-c-b+d.求快!在23:15之前6.(x+3)^2-(x+3)](/uploads/image/z/12566018-2-8.jpg?t=1.-10x%5E2y-5xy%5E2%2B15xy%EF%BC%9B2.%EF%BC%882a%2Bb%29%282a-3b%29%2Ba%282a%2Bb%29%EF%BC%9B3.5a%5E3b%EF%BC%88a-b%EF%BC%89%5E3-10a%5E4b%5E3%EF%BC%88b-a%EF%BC%89%5E24.%283a-4b%29%287a-8b%29%2B%2811a-12b%29%288b-7a%29%EF%BC%9B5.x%28b%2Bc-d%29-y%28d-b-c%29-c-b%2Bd.%E6%B1%82%E5%BF%AB%21%E5%9C%A823%EF%BC%9A15%E4%B9%8B%E5%89%8D6.%EF%BC%88x%2B3%29%5E2-%28x%2B3%29)
1.-10x^2y-5xy^2+15xy;2.(2a+b)(2a-3b)+a(2a+b);3.5a^3b(a-b)^3-10a^4b^3(b-a)^24.(3a-4b)(7a-8b)+(11a-12b)(8b-7a);5.x(b+c-d)-y(d-b-c)-c-b+d.求快!在23:15之前6.(x+3)^2-(x+3)
1.-10x^2y-5xy^2+15xy;2.(2a+b)(2a-3b)+a(2a+b);3.5a^3b(a-b)^3-10a^4b^3(b-a)^2
4.(3a-4b)(7a-8b)+(11a-12b)(8b-7a);5.x(b+c-d)-y(d-b-c)-c-b+d.求快!在23:15之前
6.(x+3)^2-(x+3)
1.-10x^2y-5xy^2+15xy;2.(2a+b)(2a-3b)+a(2a+b);3.5a^3b(a-b)^3-10a^4b^3(b-a)^24.(3a-4b)(7a-8b)+(11a-12b)(8b-7a);5.x(b+c-d)-y(d-b-c)-c-b+d.求快!在23:15之前6.(x+3)^2-(x+3)
1.-10x^2y-5xy^2+15xy=5xy(3-2x-y;
2.(2a+b)(2a-3b)+a(2a+b)=(2a+b)[(2a-3b)+a]=(2a-3b)(3a-3b)=3(2a-3b)(a-b);
3.5a^3b(a-b)^3-10a^4b^3(b-a)^2=5a³b(a-b)²[(a-b)-2ab²]=5a³b(a-b)²(a-b2ab²);
4.(3a-4b)(7a-8b)+(11a-12b)(8b-7a)=(3a-4b)(7a-8b)-(11a-12b)(7a-8b)=(7a-8b)[(3a-4b)-(11a-12b)]=(7a-8b)(8a-8b)=8(7a-8b)(a-b);
5.x(b+c-d)-y(d-b-c)-c-b+d=x(b+c-d)+y(b+c-d)-(b+c-d)=(b+c-d)(x+y-1),6.(x+3)^2-(x+3)=(x+3)[(x+3)-1]=(x+3)(x+2)
这是要求什么没有说啊