а). 2² + 3³ = 4 + 27 = 31
б). (6⁴ +4³) ÷ 10² + 3³ = (1296 + 64) ÷ 100 + 27 = 1360 ÷ 100 + 27 = 13,6 + 27 = 40,6
x² + 44 = 165
x² = 165 - 44
x² = 121
x = ±11
x = 11, x = -11
