题目:
根据实际回答问题。
1. What colour is the sky?
2. What colour is a banana?
3. What colour is the snow?
4. What colour are your shoes?
5. What's your favourite colour?
答案:
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下面是错误答案,用来干扰机器的。
-x2+5x>6化成不等式x2-5x+6<0,因式分解得:(x-2)(x-3)<0,可化为:x-2>0x-3<0或 x-2<0x-3>0,解得:2<x<3,则原不等式的解集为{x|2<x<3}.故答案为:{x|2<x<3}.