(-2+根号6)(-2-根号6)+2倍根号3|1*3倍根号2=(-2)²-(√6)²+2/3√3*3√2=4-6+2√6=-2+2√6
(-2+根号6)(-2-根号6)+2倍根号3|1*3倍根号2=-2+2√6
