(x + 1) ⋅ (x -1) - x2 - 1, x2 + 1 - x2 + 1, (x + 1) ⋅ (x +1) - x2 + 2x + 1, (x - 1)2 - (x - 1) ⋅ (x -1), x2 - 4 - (x - 2) ⋅ (x + 2), (x - 2)2 - x2 - 4x + 4, (x + 2)2 - x2 + 4x + 4,

conti

由
打印
嵌入

排行榜

视觉风格

选项

切换模板

恢复自动保存：？