1.若/x-3/+(2x-y)²+根号y+z=0,求x,y,z的值.2.若根号4+x与根号y-2互为相反数,求2x-y的值.3将边长为3厘米的正三角形的个边三等分,以这六个分点构成一个正六边形,则顺次连接这个正六边形的各边中
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![1.若/x-3/+(2x-y)²+根号y+z=0,求x,y,z的值.2.若根号4+x与根号y-2互为相反数,求2x-y的值.3将边长为3厘米的正三角形的个边三等分,以这六个分点构成一个正六边形,则顺次连接这个正六边形的各边中](/uploads/image/z/1835382-30-2.jpg?t=1.%E8%8B%A5%2Fx-3%2F%2B%282x-y%29%26sup2%3B%2B%E6%A0%B9%E5%8F%B7y%2Bz%3D0%2C%E6%B1%82x%2Cy%2Cz%E7%9A%84%E5%80%BC.2.%E8%8B%A5%E6%A0%B9%E5%8F%B74%2Bx%E4%B8%8E%E6%A0%B9%E5%8F%B7y-2%E4%BA%92%E4%B8%BA%E7%9B%B8%E5%8F%8D%E6%95%B0%2C%E6%B1%822x-y%E7%9A%84%E5%80%BC.3%E5%B0%86%E8%BE%B9%E9%95%BF%E4%B8%BA3%E5%8E%98%E7%B1%B3%E7%9A%84%E6%AD%A3%E4%B8%89%E8%A7%92%E5%BD%A2%E7%9A%84%E4%B8%AA%E8%BE%B9%E4%B8%89%E7%AD%89%E5%88%86%2C%E4%BB%A5%E8%BF%99%E5%85%AD%E4%B8%AA%E5%88%86%E7%82%B9%E6%9E%84%E6%88%90%E4%B8%80%E4%B8%AA%E6%AD%A3%E5%85%AD%E8%BE%B9%E5%BD%A2%2C%E5%88%99%E9%A1%BA%E6%AC%A1%E8%BF%9E%E6%8E%A5%E8%BF%99%E4%B8%AA%E6%AD%A3%E5%85%AD%E8%BE%B9%E5%BD%A2%E7%9A%84%E5%90%84%E8%BE%B9%E4%B8%AD)
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