x²-4x+4
=(x-2)²
猜你喜欢
- 1She writes____than I.A.more careful B.much careful C.much more carefully D.much carefully
- 2初中所有动词的过去式和过去分词
- 3what time is it?i want to become a member of the english club.i also like chinese lessons变为同义
- 4某同学自重400N 直接将100N重的物体般到3M高的楼
- 5Here is my family photo!(改为同义句) Here is ___ ___ ___ my family.
- 6abCd×9=dCba.abcd是几
- 7一个半圆的半径为r,则它的周长可以用_表示,它的面积可以用_表示,如果这个半圆的周长是15.42厘米,这个半圆的直径是_厘米,面积是_平方厘米.
- 8She is gone
- 9质量为M的小球固定于轻杆的一端,可自由的绕另一端在竖直平面做圆周运动,当小球通过最高点时,杆对球的作用力为Mg/2,不计阻力,求:球通过最低点时杆受到的作用力
- 10∫(上1下0)dx∫(上x下x^2)f(x,y)dy=?