2cos45°+ |根号2-根号3|=?
问题描述:
2cos45°+ |根号2-根号3|=?
答
2*(1/2*根号2)+根号3-根号2=根号3
答
2*根号2/2+根号3-根号2
=根号2+根号3-根号2
=根号3