a平方-4a+4= (a-2)^2
1\4+b+b平方= (b+1/2)^2
√(a-2)^2+(b+1/2)^2
=|a-2|+|b+1/2|
1)0
初3的2次根式求:a>0>b,化简根号(a平方-4a+4)+根号(1\4+b+b平方)
初3的2次根式求:a>0>b,化简根号(a平方-4a+4)+根号(1\4+b+b平方)
3>a>2>0>-1>b>-2
3>a>2>0>-1>b>-2
数学人气：739 ℃时间：2019-10-17 04:05:02
优质解答
我来回答
类似推荐
猜你喜欢
- 1Mrs Grey preferred to ride a bicycle to work___it was a rainy day ,__it gave her some exercise.47
- 2已知堤坝的横断面是等腰梯形ABCD,上底CD的宽为a,下底AB的宽为b,坝高为h,则堤坝的坡度i=___
- 3where's miss wang?____she's in class three.
- 4若a/IaI+IbI/b+c/IcI=1,求IabcI/abc/(bc/IabI*ac/IbcI*ab/IacI)的值,
- 5英语翻译
- 611.用简洁的语言概括“而或长烟一空,皓月千里,浮光跃金,静影沉璧,渔歌互答,此乐何极!"所描写的内容
- 7七下英语阅读练习题附答案最好是短篇
- 8在同一平面内（ ）的两条直线叫做平行线.括号内是什么?
- 9The boy is my brother 对my brother提问
- 10乙醇和乙酸的沸点,熔点都比C2H4,C2H6的沸点和熔点高