х² - 13х + 22 = (x - 11)(x - 2)
D = 13² - 4 × 22 = 169 - 88 = 81
x₁,₂ = 13 ± 9 / 2
x₁ = 4 / 2 = 2
x₂ = 22 / 2 = 11
х² - 13х + 22 = (x - 11)(x - 2)
D = 13² - 4 × 22 = 169 - 88 = 81
x₁,₂ = 13 ± 9 / 2
x₁ = 4 / 2 = 2
x₂ = 22 / 2 = 11