cubic equation

x³ + ax² + bx + c = 0 

x³ - ( α+β+γ )x² - ( αβ+βγ+αγ )x - αβγ = 0

α+β+γ = a

αβ+βγ+αγ = b

αβγ = c

x³ - 6x² - 11x - 6 = 0

α+β+γ = 6

αβ+βγ+αγ = 11

αβγ = 6

α = 1，β = 2，γ = 3

( x-1)(x-2)(x-3) = 0

           T.theodor                    2022.7.21