计算:(1)(x-1)(x+3)=( );(2)(2x-1)(2x+1)=( ) 发布时间:2017-05-17 20:14 │ 来源:www.tikuol.com 题型:填空题 问题: 计算:(1)(x-1)(x+3)=( );(2)(2x-1)(2x+1)=( ); (3)(9x2-3x)÷3x =( );(4)(a-b)2+( )=(a+b)2
题型:填空题 小小翻译家。1. What do you have at school today? _________________________________2. She plays football in the morning. _________________________________3. What does she do at the weekend? __________________________________4. He has Music and Art today. __________________________________5. I have Chinese and Maths, too. __________________________________ 查看答案
题型:填空题 以下程序的输出结果是( )。 #include<iostream.h> voidmain( ) { charx=040; cout<<(x<<1);} A.并运算B.交运算C.差运算D.积运算 查看答案