题目
x^2-2x+1-7(1-x)-18怎么因式分解
提问时间：2020-10-31
答案
=(x-1)²+7(x-1)-18
=(x-1+9)(x-1-2)
=(x+8)(x-3)
=(x-1+9)(x-1-2)
=(x+8)(x-3)
举一反三
我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
奥巴马演讲不用看稿子.为什么中国领导演讲要看?
想找英语初三上学期的首字母填空练习……
英语翻译
1,人们染上烟瘾,最终因吸烟使自己丧命.
最新试题
- 1She is_(tall)one of all the girls in my class.
- 2两种大气污染物NO2和SO2在一定条件下可以发生如下反应：NO2+SO2=NO+SO3，在体积为V L的密闭容器中通入a molNO2和bmolSO2，反应后容器内硫原子和氧原子个数比为（ ） A.
- 3方差分析中F比求出,如何得到P值?
- 4已知∠a=72°20′,则∠a的余角是（）,∠a的补角是
- 52000毫升水有多少千克
- 6It was his deafness that affected his being employed ,and it was several days before he finally ...
- 7多聚L-赖氨酸和L-谷氨酸的比旋随PH改变的原因是______?填空题.
- 8my father is busy he often keeps working __ midnight A、while B、since C、until D、for
- 9My daughter wanted to keep a puppy that she decided to buy one with her own pocket money
- 10已知:平面α∩β=直线l,又直线a与α有一个公共点P,试分析α与β的位置关系
热门考点