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Verified answer
PerSamaaN KuaDraTx² + 2px + 9 = 0
• 2 akar sama (akar kembar)
syarat : D = 0
D = 0
b² - 4ac = 0
(2p)² - 4.1.9 = 0
4p² = 36
p² = 9
p = √9
p = 3 atau p = -3
• 2 akar tdk real
Syarat : D < 0
D < 0
4p² - 36 < 0
p² < 9
-3 < p < 3