下列根式中能与合并的二次根式为[]A.B.C.D.-九年级数学

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• 计算：-八年级数学
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• 计算：-八年级数学
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• 化简：-八年级数学
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• 化简：。-八年级数学
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• 计算：（1）；（2）。-八年级数学
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• 计算：2-=[]A.5B.3C.-3D.-1-九年级数学
• 计算：-八年级数学
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• 计算：-八年级数学
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• 计算：。-八年级数学
• 计算：（1）；（2）。-八年级数学
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• 计算：。-八年级数学
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• （1）解下列不等式（组），并把解集在数轴上表示出来：①2x-2≤1+x；②；（2）计算：；（3）求x的值：4（x+1）2=81。-八年级数学
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• 计算：-九年级数学
• 计算：=（）。-九年级数学