原式=2x²+5x+25/8-25/8-1
=(√2x+5√2/4)²-33/8
=(√2x+5√2/4+√66/4)(√2x+5√2/4-√66/4)
猜你喜欢
- 1物体吸收热量,温度一定升高这句话对吗?为什么?
- 2an=n^(n+1),bn=(n+1)^n 比较大小并证明 用数学归纳法
- 3早晨的雾真大啊,怎样把句子写更具体
- 4there is some orange and bread on the table.
- 5Turn off the water when you are brushing
- 68-4.5x=7.5x-4 解方程,
- 7过直线外一点作已知直线的平行线与垂线．
- 8有300个桃子，大猴子拿走1/3，小猴子拿走余下的1/4．小猴子拿走了多少个桃？
- 9求描写山、水、天气、建筑的成语各四个
- 10henry started to ___a group of people to a group people to stop stealing.