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Haha sama Berarti. sabar ya aku jawab :
Maaf No 1 Belum Ngerti
2. X² + 2x - 8 = 0
(x + 4 ) ( x - 2 ) = 0
X + 4 = 0 X - 2 = 0
X = -4 X = 2
3. ada di gambar