1) x² - 5x +6 = 0
2) x² + 2x -15 = 0
3) x² + 4x -12 = 0
jawab dengan cara menyelesaikan kuadrat sempurna
2) x² + 2x -15 = 0
3) x² + 4x -12 = 0
jawab dengan cara menyelesaikan kuadrat sempurna
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