Question

(3+√2)total la a 2 as Doris si EU rezolvarea

Answer 1

$(3 + \sqrt{2})*(3 + \sqrt{2}) = 3 * 3 + 3 * \sqrt{2} + \sqrt{2} * 3 + \sqrt{2} * \sqrt{2} = \\ 9 + 6 * \sqrt{2} + 2 = 11 + 6 * \sqrt{2}$