Jika akar persamaan kuadrat, diketahui -2 dan 6 maka persamaan kuadratnya?​

x1 = -2

x2 = 6

(x – x1)(x – x2)

= (x – (-2))(x – 6)

= (x + 2)(x – 6)

= x² – 6x + 2x – 12

= x² – 4x – 12