此题改为:11²+13*66+39² 好了...
原式=11²+2*11*39+39²
=(11+39)²
=(50)²
= 2500
;)
猜你喜欢
- 1如图所示,小球从竖直砖墙某位置静止释放,用频闪照相机在同一底片上多次曝光
- 2写家乡美景的作文题目
- 3Please help translate the content of a work Email.Thanks a lot.Waiting for your response online.
- 4下列有一种动物体内细胞获得氧和二氧化碳的方式与其他动物不同,这种动物是( ) A.蝗虫 B.蚯蚓 C.家鸽 D.鲫鱼
- 5吃药有have the medicine的说法吗?
- 6“只讲真实的话”作为一句单独的话是only telling the truth还是only tell the truth?
- 7有一梯形,两底分别为16厘米,24厘米,两底角分别为60°,30°.求最短腰长.
- 8向Fe(OH)3胶体中滴加H2SO4溶液的现象
- 9已知抛物线C:y2=2px(p>0)过点A(1,-2)求抛物线C的方程并求其准线方程
- 10What are___ teachers doing? They are having a meeting. A.this/B.that/c.those选哪个?