科目:初中數(shù)學(xué) 來源: 題型:
1 |
a-b |
1 |
a+b |
2a |
a2+b2 |
4a3 |
a4+b4 |
x2+yz |
x2+(y-z)x-yz |
y2-zx |
y2+(z+x)y+zx |
z2+xy |
z2-(x-y)z-xy |
x3-1 |
x3+2x2+2x+1 |
x3+1 |
x3-2x2+2x-1 |
2(x2+1) |
x2-1 |
(y-x)(z-x) |
(x-2y+z)(x+y-2z) |
(z-y)(x-y) |
(x+y-2z)(y+z-2x) |
(x-z)(y-z) |
(y+z-2x)(x-2y+z) |
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