tolong bantu ya di bagian Melengkapi kuadrat sempurna (salin dan isilah…)no 2 beserta caranya.Trims

x² – 3x -4 = 0

x² – 3x = 4

x² – 3x + (-3/2)² = 4 + (-3/2)²

(x – 3/2)² = 4 + 9/4

(x – 3/2)² = 16/4 + 9/4

(x – 3/2)² = 25/4

x – 3/2 = ±√25/4

x – 3/2 = ± 5/2

Penyelesaian

1.) x – 3/2 = 5/2

x = 5/2 + 3/2

x = 8/2

x = 4

2.) x – 3/2 = -5/2

x = -5/2 + 3/2

x = -2/2

x = -1

Maaf jika salah!