12x - 15y = = ____ . (____- ____) 9tu + 6u = = ____ . (____ ____ ____) ____ - ____ = = a . (14b - 5c) 7t - 8u = = - (____ - ____) 2d - 5e = = - (____ + ____) - 24 a + 15 ab = = ____ . (____ - 5b) (3+a).a - 5.(3+a) = = (____) . (____) 4x.(6 - x) - (x -6).5 = = (6 - x).(____ ____ ____)

Mnohočleny - vytýkání 2

由
嵌入

排行榜

视觉风格

选项

切换模板

恢复自动保存：？