分解因式
分解因式
1.ax-2ay+2bx-4by
2.x^3+x^2-4x-4
3.x^2-x-4y^2+2y
4.4xy+1-4x^2-y^2
5.x^2-10xy+21
6.4a^2b-3ab^2-a^3
7.x^4-a^2x^2-b^2x^2+a^2b^2
8.x^2(x+1)-y(xy+x)
可不可以写过程啊
1.ax-2ay+2bx-4by
2.x^3+x^2-4x-4
3.x^2-x-4y^2+2y
4.4xy+1-4x^2-y^2
5.x^2-10xy+21
6.4a^2b-3ab^2-a^3
7.x^4-a^2x^2-b^2x^2+a^2b^2
8.x^2(x+1)-y(xy+x)
可不可以写过程啊
数学人气:713 ℃时间:2020-01-28 16:26:48
优质解答
1. ax-2ay+2bx-4by=ax+2bx-(2ay+4by) =(x-2y)(a+2b)2. x^3+x^2-4x-4=x(x^2-4)+(x^2-4) =(x-1)(x-2)(x+2)3. x^2-x-4y^2+2y=(x^2-4y^2)-(x-2y)=(x-2y)(x+2y-1)4. 4xy+1-4x^2-y^2=1-(4x^2-4xy+y^2)=(1+2x-y)(1-2x+y)...
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