1.若一个角的补角与它的余角的2倍的差事平角的1/4,那么这个角等于___2.若(-2a²×a的x次幂)³=-8a的18次幂.则 X的值为___3.若x-y=2,x²+y²=3,则xy=__4.观察下列格式:1²+1=1×2;2²+2=
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![1.若一个角的补角与它的余角的2倍的差事平角的1/4,那么这个角等于___2.若(-2a²×a的x次幂)³=-8a的18次幂.则 X的值为___3.若x-y=2,x²+y²=3,则xy=__4.观察下列格式:1²+1=1×2;2²+2=](/uploads/image/z/918989-53-9.jpg?t=1.%E8%8B%A5%E4%B8%80%E4%B8%AA%E8%A7%92%E7%9A%84%E8%A1%A5%E8%A7%92%E4%B8%8E%E5%AE%83%E7%9A%84%E4%BD%99%E8%A7%92%E7%9A%842%E5%80%8D%E7%9A%84%E5%B7%AE%E4%BA%8B%E5%B9%B3%E8%A7%92%E7%9A%841%2F4%2C%E9%82%A3%E4%B9%88%E8%BF%99%E4%B8%AA%E8%A7%92%E7%AD%89%E4%BA%8E___2.%E8%8B%A5%EF%BC%88-2a%26sup2%3B%C3%97a%E7%9A%84x%E6%AC%A1%E5%B9%82%EF%BC%89%26sup3%3B%3D-8a%E7%9A%8418%E6%AC%A1%E5%B9%82.%E5%88%99+X%E7%9A%84%E5%80%BC%E4%B8%BA___3.%E8%8B%A5x-y%3D2%2Cx%26sup2%3B%2By%26sup2%3B%3D3%2C%E5%88%99xy%3D__4.%E8%A7%82%E5%AF%9F%E4%B8%8B%E5%88%97%E6%A0%BC%E5%BC%8F%EF%BC%9A1%26sup2%3B%2B1%3D1%C3%972%EF%BC%9B2%26sup2%3B%2B2%3D)
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