Вычислите: 4 / 2+√2 - 5+2√2

= 4 - 5*(2+√2) + 2√2 * (2 + √2) == 4 - 10 - 5√2 + 4√2 + 2 * 2 == - 6 - √2 + 4 = - 2 - √2 ----------------------------------------------------