tentukan model persamaan kuadrat baru jika akar-akarnya diketahui -1/3 dan -3/5
Jawaban :
x1 = -⅓
x2 = -⅗
= (x - x1)(x - x2)
= (x + ⅓)(x + ⅗)
= x² + ⅗x + ⅓x + 3/15
= x² + ⅗x + ⅓x + 3/15
= x² + 14/15x + 3/15
= 15x² + 14x + 3
Jawaban :
x1 = -⅓
x2 = -⅗
= (x - x1)(x - x2)
= (x + ⅓)(x + ⅗)
= x² + ⅗x + ⅓x + 3/15
= x² + ⅗x + ⅓x + 3/15
= x² + 14/15x + 3/15
= 15x² + 14x + 3