Question

2х2-3х-2 разложить на множители трехчлен

Answer 1

ax^2 + bx + c = a(x - x1)(x - x2)
2х^2 - 3х - 2 :
D = 25
x1 = (3 + 5)/4 = 8/4 = 2
x2 = (3 - 5)/4 = -2/4 = -1/2
2х^2 - 3х - 2 = 2(x-2)(x+1/2)