计算:(3+根号2)²(3-根号2)-(3-根号2)²(3+根号2)
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![计算:(3+根号2)²(3-根号2)-(3-根号2)²(3+根号2)](/uploads/image/z/1573768-64-8.jpg?t=%E8%AE%A1%E7%AE%97%EF%BC%9A%EF%BC%883%EF%BC%8B%E6%A0%B9%E5%8F%B72%EF%BC%89%26%23178%3B%EF%BC%883%EF%BC%8D%E6%A0%B9%E5%8F%B72%EF%BC%89%EF%BC%8D%EF%BC%883%EF%BC%8D%E6%A0%B9%E5%8F%B72%EF%BC%89%26%23178%3B%EF%BC%883%EF%BC%8B%E6%A0%B9%E5%8F%B72%EF%BC%89)
计算:(3+根号2)²(3-根号2)-(3-根号2)²(3+根号2)
计算:(3+根号2)²(3-根号2)-(3-根号2)²(3+根号2)
计算:(3+根号2)²(3-根号2)-(3-根号2)²(3+根号2)
(3+根号2)²(3-根号2)-(3-根号2)²(3+根号2)
=(3+根号2)(3-根号2)【(3+根号2)-(3-根号2)】
=(3+根号2)(3-根号2)(2根号2)
=(3²-根号2²)(2根号2)
=7(2根号2)
=14根号2