2x²+17x+15= tolong di jawab....
Matematika
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2x²+17x+15= tolong di jawab....
1 Jawaban
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1. Jawaban Anonyme
Bab Persamaan Kuadrat
Matematika SMP Kelas VIII
2x² + 17x + 15 = 2x² + 2x + 15x + 15
= 2x (x + 1) + 15 (x + 1)
= (2x + 15) (x + 1)
2x² + 17x + 15 = 0
(2x + 15) (x + 1) = 0
2x + 15 = 0 atau x + 1 = 0
2x = -15 x = -1
x = -15/2