а) (6-√3)^2 = 6^2 - 26√3 + (√3)^2 = 36 - 12√3 + 3 = 39 - 12√3.
б) (√5+√7)^2 = (√5)^2 + 2√5√7 + (√7)^2 = 5 + 2√35 + 7 = 12 + 2√35.
в) (2√2-√8)^2 = (2√2)^2 - 22√2√8 + (√8)^2 = 82 - 4√16 + 8 = 16 - 8√16 + 8 = 24 - 84 + 8 = 24 - 32 + 8 = 0.
а) (6-√3)^2 = 6^2 - 26√3 + (√3)^2 = 36 - 12√3 + 3 = 39 - 12√3.
б) (√5+√7)^2 = (√5)^2 + 2√5√7 + (√7)^2 = 5 + 2√35 + 7 = 12 + 2√35.
в) (2√2-√8)^2 = (2√2)^2 - 22√2√8 + (√8)^2 = 82 - 4√16 + 8 = 16 - 8√16 + 8 = 24 - 84 + 8 = 24 - 32 + 8 = 0.