化简：[+÷（+）2]×=（）-八年级数学

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• 如果2，那么的值为[]A．B．1C．D．2-八年级数学
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• 阅读下列材料，然后回答问题。在进行二次根式去处时，我们有时会碰上如，一样的式子，其实我们还可以将其进一步化简：；（一）（二）（三）以上这种化简的步骤叫做分母有理化。还可-九年级数学
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