蟹蟹了,1道计算题.(2根号3+3根号2-根号6)(2根号3-3根号2+根号6)
问题描述:
蟹蟹了,1道计算题.(2根号3+3根号2-根号6)(2根号3-3根号2+根号6)
答
用因式分解
解 原式=[2根号3+(3根号2-根号6)][(2根号3-(3根号2-根号6)]
=2根号3的平方-(3根号2-根号6)的平方
=12-24+6根号3
=6根号3-12
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