melengkapi 8x² +2x -3=0

Kelas 10 Matematika
Bab Persamaan Kuadrat

8x² + 2x - 3 = 0

◎◎ dibagi 8 ◎◎

x² + (2/8) x - (3/8) = 0
x² + (1/4) x = 3/8
x² + (1/4) x + 1/64 = 3/8 + 1/64
(x + 1/8)² = 24/64 + 1/64
x + (1/8) = √(25/64)
x = -1/8 +- 5/8

x1 = -1/8 + 5/8
x1 = 4/8
x1 = 1/2

x2 = -1/8 - 5/8
x2 = -6/8
x2 = -3/4