2x^³-5x²+1
=2x³-x²-4x²+1
=x²(2x-1)-(2x+1)(2x-1)
=(2x-1)(x²-2x-1)
猜你喜欢
- 1如果我们每次在洗漱时浪费1ml水,那么按我国13亿人计算,每人每天洗漱两次,一年要浪费多少水?
- 2How much do you spend on this pair of trousers?How much _____ this pair of trousers_____?
- 3如果房间面积是16平方,那么贴墙纸的墙面面积怎么算谢谢了,
- 4英文 I want to listen to your voice yesternight ,but i can't at ast 什么意识
- 5七年级数学题(对你们来说可能很简单)
- 6甲数是乙数的125%,那么乙数是甲数的80%._.(判断对错)
- 7Could you please d__ more slowly?
- 8二次函数f(x)=x2+qx+r满足1/m+2+q/m+1+r/m=0,其中m>0. (1)判断f(m/m+1)的正负; (2)求证:方程f(x)=0在区间(0,1)内恒有解.
- 9he visited beijing zoo last summer对last summer提问
- 10三个5一个1怎么算等于24