(3倍的根号2-根号6)(负3倍的根号2-根号6)等于
问题描述:
(3倍的根号2-根号6)(负3倍的根号2-根号6)等于
答
3√2-√6﹚﹙﹣3√2-√6﹚
=﹙﹣√6﹚²-﹙3√2﹚²
=6-18
=﹣12.