(3倍根号3加根号5)(3倍根号3减根号5)拜托各位大神
问题描述:
(3倍根号3加根号5)(3倍根号3减根号5)拜托各位大神
答
(3√3+√5)(3√3-√5) =(3√3)^2-(√5)^2 =27-5 =22
(3倍根号3加根号5)(3倍根号3减根号5)拜托各位大神
(3√3+√5)(3√3-√5) =(3√3)^2-(√5)^2 =27-5 =22