一、选择题1.下列各式中属于最简二次根式的是A.丫xZ+1D.了瓦万2.把二次根式一a A.丫幅B.移到根号内为B.丫妥万歹c.丫i厄漂根号夕卜。一。:丫二蕊C一护及尸D一沪丫/二万3.下列四个说法中,正确的是 A.同类二次根式一定是最简二次根式 B.被开方数不同的二次根式一定不是同类二次 First, multiple-choice questions 1. The following are the simplest secondary roots of the following formula: A. 丫xZ + 1D. V. W. 2. Move the secondary roots one a. A. Pastures B. to the root number B.丫 歹 歹 歹 歹 歹 厄 厄. one. : 丫 蕊 two cores C Guardian and Corpse D 丫 丫 / 20,000 3. In the following four statements, the correct is that A. The same kind of secondary roots must be the simplest of the secondary roots B. The number of squared radix is ​​different The root formula must not be the same as the secondary