题目

The are _____(pride) that they are members of such a fine team .
The dog needs a lot of ______ (训练) to help the blind cross the road.
The students must be ______ (惩罚) for their carelessness inthe exam.
(x+2)²－4(x+2)+3=0
x²+2(√3+1)x+2√3=0
词组翻译 而不工作 __________

提问时间：2020-08-07

答案

pride
training
punished
提取x+2,用平方差公式
x=1
用十字相乘法得,(x+1)(x+2√3)
x=-1或x=-2√3
补充Instead of working