a)[(2√18-4√3)/2-√6]+√13+4√3b)F=(7√6+1)^2 + (3√2-4√3)^2c)O=(3√7-√3)^2 - 2×(8√21-1)^2d)P=7×(3√5-4√2)^2 + (7+√10)^2
Đăng ký qua Facebook hoặc Google: