akar-akar persamaan kuadrat x²-8x+c=0, adalah x1 dan x2. jika x2=3x1 maka nilai c sama dengan...

Persamaan Kuadrat

x² - 8x + c = 0
x2 = 3x1

x1 + x2 = -b/a = -(-8)/1 = 8
x1 + 3x1 = 8
4x1 = 8
x1 = 2
x2 = 3x1 = 6

x1 × x2 = c
2 × 6 = c
c = 12 ✔