1 вычислите 2 решите уравнение?
6+2√5 = (1+√5)² 6-2√5 = (1-√5)² ... = |1+√5| - |1-√5| = 1+√5 - (-(1-√5)) = 1+√5 + 1-√5 = 2 -------------------------------------------------------------------------- πx/4 = (π/2) + 2πn, n∈Z πx = 2π + 8πn, n∈Z x = 2 + 8n, n∈Z