二次根式练习提高题(较难)(最新整理)

1、二次根式练习提高题（较难）1. 下列各式中属于最简二次根式的是（）x 2 + 1x 2 y 5120.5abcd2. 下列各组根式中，是同类二次根式的是（）318313a 2bab 2a + 1a - 11312a和b和c和d和3. 计算：（1）-+ 13218575 - 3+ 4182 12（2） 2+ 42 - 3 48 4. 化简：8a（1） a 2+ 3a- a 18a350a32（2）3+ 2xxyb8a2b 2- y- xyyxxy1xy8a3b 2 ba 22（3）- b- 2a - a b2bx y - yx y + y x xx- y+ x yy x - x y （4）（5）

2、a - b ba abb b-+ a - b a+ b(a + b + 2ab )+ a + b ba ab+aax + 1 + x 2x 2 + 1 - x（6）a + b + 2 aba + b - 2 ab（7）(a b 0)2 +32 +2 +32 +2 +2 +32 -2 +2 +3（8）9 - 4 59 + 4 5（9）+6 -356 +35（10）+5 + 2 65 - 2 6 a 2 - 2 20045. 已知： a + b =， a - b =，求的值。 b 2 - 1 11 +212 +313 +46. 设 s =+l +12003 +2004t12004 2003 + 2

3、003 2004t = 12345620032004，求 (s + 1)2 的值。12 +213 2 + 2 37.计算：+l +“”“”at the end, xiao bian gives you a passage. minand once said, people who learn to learn are very happy people. in every wonderful life, learning is an eternal theme. as a professional clerical and teaching position, i understand the

4、 importance of continuous learning, life is diligent, nothing can be gained, only continuous learning can achieve better self. only by constantly learning and mastering the latest relevant knowledge, can employees from all walks of life keep up with the pace of enterprise development and innovate to meet the needs of the market. this document is also edited by my studio professionals, there may be err