分三段
x2
因为把绝对值开出来的时候,要考虑绝对值里面的值是正还是负,负的要加负号再开出来.
x
猜你喜欢
- 1you should pay attention to_pronunciation of_world A)the,/ B)the,the C)/,theD)the,a
- 2Today Mike is playing near a river.Suddenly,his knife goes into the water.阅读理解.
- 3Pat goes to school by bus every morning.(划线提问:by bus) ___ ___Pat___to school every morning?
- 4写出与划线部分相同发音的单词
- 5高手帮下忙.写一篇what is your favourite sport?的文章.50-100词.内容大概关于how you became interesed in that sport,you favourite athlete,wha
- 6关于吸烟有害健康的劝说作文200到300字
- 7It keeps raining They feel ______ ( worrying/ worried / worry).
- 8是do you know what's on TV tonight 还是do you know what on TV tonight is?
- 9一种砖,底面长20cm,宽15cm,要铺成一块正方形地面,至少要多少块砖?
- 10A、B、C三本书,至少读过其中一本的有20人,读过A书的有18人,读过B书的有16人,读过C书有15人,三本书全读过的至少有几人?