4x²-9=0
(2x+3)(2x-3)=0
x=-3/2,x=3/2
猜你喜欢
- 1英语翻译
- 2Then the wolf huffed and puffed and blew the house down.
- 3茄子,萝卜,白菜,地瓜,黄瓜哪个是不同类·型的词语
- 4电灯工作时,( )做功,电能转化为( )能
- 5They have caused in losses of lives and other things.怎么翻译?
- 6I am a with myself .I make such a mistake
- 7They expressed their ___that they could come back to China in the near future,although they knew it was quite impossible
- 8注意事项 用英语怎么说?
- 9若实数X,Y满足X^2+3Y^2-12Y+12=0,则Y的值是?
- 10sell 的用法