1.(-√2)x 2√7-√10(保留三个有效数字)2.π/2-|2√3-3√2| (精确到百分位)3.已知a,b,c为实数,且它们在数轴上的对应点的位置如图所示,化简2√(b-a)² + |b+c| - √(a-c)² - 2|a|4.已知整
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![1.(-√2)x 2√7-√10(保留三个有效数字)2.π/2-|2√3-3√2| (精确到百分位)3.已知a,b,c为实数,且它们在数轴上的对应点的位置如图所示,化简2√(b-a)² + |b+c| - √(a-c)² - 2|a|4.已知整](/uploads/image/z/2655181-37-1.jpg?t=1.%EF%BC%88-%E2%88%9A2%EF%BC%89x+2%E2%88%9A7-%E2%88%9A10%EF%BC%88%E4%BF%9D%E7%95%99%E4%B8%89%E4%B8%AA%E6%9C%89%E6%95%88%E6%95%B0%E5%AD%97%EF%BC%892.%CF%80%2F2-%7C2%E2%88%9A3-3%E2%88%9A2%7C+%28%E7%B2%BE%E7%A1%AE%E5%88%B0%E7%99%BE%E5%88%86%E4%BD%8D%EF%BC%893.%E5%B7%B2%E7%9F%A5a%2Cb%2Cc%E4%B8%BA%E5%AE%9E%E6%95%B0%2C%E4%B8%94%E5%AE%83%E4%BB%AC%E5%9C%A8%E6%95%B0%E8%BD%B4%E4%B8%8A%E7%9A%84%E5%AF%B9%E5%BA%94%E7%82%B9%E7%9A%84%E4%BD%8D%E7%BD%AE%E5%A6%82%E5%9B%BE%E6%89%80%E7%A4%BA%2C%E5%8C%96%E7%AE%802%E2%88%9A%EF%BC%88b-a%EF%BC%89%26sup2%3B+%2B+%7Cb%2Bc%7C+-+%E2%88%9A%EF%BC%88a-c%EF%BC%89%26sup2%3B+-+2%7Ca%7C4.%E5%B7%B2%E7%9F%A5%E6%95%B4)
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