多项式因式分解 y(x-y)+x(y-x) 还有6个我待会就补充题目
y(x-y)+x(x-y)a(x-y)ˇ2-b(y-x)ˇ24aˇ2b(a-b)-6abˇ2(a-b)x(y-3)-(2y-6)(x+y)ˇ3-(x-y)ˇ2(x+y)x...
y(x-y)+x(x-y)
a(x-y)ˇ2-b(y-x)ˇ2
4aˇ2b(a-b)-6abˇ2(a-b)
x(y-3)-(2y-6)
(x+y)ˇ3 -(x-y)ˇ2(x+y)
x(xˇ2 -xy)-(4xˇ2-4xy) 展开
a(x-y)ˇ2-b(y-x)ˇ2
4aˇ2b(a-b)-6abˇ2(a-b)
x(y-3)-(2y-6)
(x+y)ˇ3 -(x-y)ˇ2(x+y)
x(xˇ2 -xy)-(4xˇ2-4xy) 展开
3个回答
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1.原式=-(x-y)^2
2.原式=(a-b)(x-y)^2
3.原式=2ab(2a-3b)(a-b)
4.原式=(x-2)(y-3)
5.原式=(x+y)(x^2+y^2+2xy-x+y)
6.原式=x(x-4)(x-y)
2.原式=(a-b)(x-y)^2
3.原式=2ab(2a-3b)(a-b)
4.原式=(x-2)(y-3)
5.原式=(x+y)(x^2+y^2+2xy-x+y)
6.原式=x(x-4)(x-y)
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y(x-y)+x(x-y)=(x-y)(x+y)
a(x-y)ˇ2-b(y-x)ˇ2=(x-y)²(a-b)
4aˇ2b(a-b)-6abˇ2(a-b)=2ab(a-b)(2a-3b)
x(y-3)-(2y-6)=(y-3)(x-2)
(x+y)ˇ3 -(x-y)²(x+y)=(x+y)(x+y+x-y)(x+y-x+y)=(x+y)(2x)(2y)=4xy(x+y)
x(xˇ2 -xy)-(4xˇ2-4xy)=x[(x²-xy)-4x+4y]=x(x-y)(x-4)
a(x-y)ˇ2-b(y-x)ˇ2=(x-y)²(a-b)
4aˇ2b(a-b)-6abˇ2(a-b)=2ab(a-b)(2a-3b)
x(y-3)-(2y-6)=(y-3)(x-2)
(x+y)ˇ3 -(x-y)²(x+y)=(x+y)(x+y+x-y)(x+y-x+y)=(x+y)(2x)(2y)=4xy(x+y)
x(xˇ2 -xy)-(4xˇ2-4xy)=x[(x²-xy)-4x+4y]=x(x-y)(x-4)
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y(x-y)+x(y-x)
=y(x-y)-x(x-y)
=(x-y)(y-X)
=-(x-y)²
=y(x-y)-x(x-y)
=(x-y)(y-X)
=-(x-y)²
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