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 __________
人气:385 ℃ 时间:2019-12-18 01:56:45
解答
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
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