求大量初中数学计算题,整式分式混合运算,二次根...
http://zhidao.baidu.com/question/236253449.html?fr=iks&word=%B3%F5%B6%FE%D5%FB%CA%BD%BB%EC%BA%CF%D4%CB%CB%E350%B5%C0%BC%B0%B4%F0%B0%B8&ie=gbk ——百度知道
-
答:①5√8-2√32+√50 =5*3√2-2*4√2+5√2 =√2(15-8+5) =12√2 ②√6-√3/2-√2/3 =√6-√6/2-√6/3 =√6/6 ③(√45+√27)-(√4/3+√125) =(3√5+3√3)-(2√3/3+5√5) =-2√5+7√5/3 ④(√4a-√50b)-2(√b/2+√9a) =(2√a-5√2b)-2(√2b/2+3√a) =-4√a-6√2b ⑤√4x*(√3x/2-√x/6) =2√x(√6x...