√2+丨√2-2丨-√(-16)²÷(-1/2)׳√-8
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![√2+丨√2-2丨-√(-16)²÷(-1/2)׳√-8](/uploads/image/z/1255544-8-4.jpg?t=%E2%88%9A2%2B%E4%B8%A8%E2%88%9A2-2%E4%B8%A8-%E2%88%9A%28-16%29%26%23178%3B%C3%B7%28-1%2F2%29%C3%97%26%23179%3B%E2%88%9A-8)
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√2+丨√2-2丨-√(-16)²÷(-1/2)׳√-8
√2+丨√2-2丨-√(-16)²÷(-1/2)׳√-8
√2+丨√2-2丨-√(-16)²÷(-1/2)׳√-8
√2+丨√2-2丨-√(-16)²÷(-1/2)׳√-8
=√2+2-√2-16÷(-1/2)×(-2)
=2-16×(-2)×(-2)
=2-64
=-62
楼上的怎么做的?