求你们了TAT.因式分解:1.(x-y)^2-(x-y)=_____2.(a-b)(a+b)+(b-a)(a+b)^2=____3.xy+x+y+1=____4.a^2-1+b^2-2ab=______
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![求你们了TAT.因式分解:1.(x-y)^2-(x-y)=_____2.(a-b)(a+b)+(b-a)(a+b)^2=____3.xy+x+y+1=____4.a^2-1+b^2-2ab=______](/uploads/image/z/8678278-46-8.jpg?t=%E6%B1%82%E4%BD%A0%E4%BB%AC%E4%BA%86TAT.%E5%9B%A0%E5%BC%8F%E5%88%86%E8%A7%A3%EF%BC%9A1.%EF%BC%88x-y%EF%BC%89%5E2-%EF%BC%88x-y%EF%BC%89%3D_____2.%28a-b%29%28a%2Bb%29%2B%28b-a%29%28a%2Bb%29%5E2%3D____3.xy%2Bx%2By%2B1%3D____4.a%5E2-1%2Bb%5E2-2ab%3D______)
求你们了TAT.因式分解:1.(x-y)^2-(x-y)=_____2.(a-b)(a+b)+(b-a)(a+b)^2=____3.xy+x+y+1=____4.a^2-1+b^2-2ab=______
求你们了TAT.
因式分解:1.(x-y)^2-(x-y)=_____
2.(a-b)(a+b)+(b-a)(a+b)^2=____
3.xy+x+y+1=____
4.a^2-1+b^2-2ab=______
求你们了TAT.因式分解:1.(x-y)^2-(x-y)=_____2.(a-b)(a+b)+(b-a)(a+b)^2=____3.xy+x+y+1=____4.a^2-1+b^2-2ab=______
1.原式=(x-y-1)(x-y)
2.原式=(a-b)(a+b)-(a-b)(a+b)(a+b)=(a-b)(a+b)(1-a-b)
3.原式=x(y+1)+y+1=(x+1)(y+1)
4.原式=(a-b)^2-1=(a-b-1)(a-b+1)
这你不会吗?提取公因式即可。 (x-y)(x-y-1) (a-b)(a+b)(1-a-b) (x+1)(y+1) (a-b+1)(a-b-1)
1.(x-y)^2-(x-y)=_(x-y)(x-y-1)____
2.(a-b)(a+b)+(b-a)(a+b)^2=_(a+b)(a-b)(1-a-b)___
3.xy+x+y+1=_x(y+1)+(y+1)=(y+1)(x+1)___
4.a^2-1+b^2-2ab=_(a-b)^2-1=(a-b+1)(a-b-1)_____
(x-y)(x-y-1)
(b-a)(a+b)(a+b-1)
(x+1)(y+1)
(a-b)^2-1=(a-b-1)(a-b+1)