Question

разложите на множители трехчлен x²-12x+20

Answer 1

x^2 - 12x + 20 = 0
D = 144 - 80 = 64
x1 = (12 + 8)/2 = 20/2 = 10
x2 = (12 - 8)/2 = 4/2 = 2

x^2 - 12x + 20 = (x - 10)(x - 2)