Jawab:
Penjelasan dengan langkah-langkah:
akar dari x² + 14x = - 45(x + 7)² = - 45 + 7²(x + 7)² = - 45 + 49(x + 7)² = 4x + 7 = ±√4x + 7 = 2 atau x + 7 = - 2
x = 2 - 7 atau x = - 2- 7x = - 5 atau x = - 9
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Jawab:
Penjelasan dengan langkah-langkah:
akar dari x² + 14x = - 45
(x + 7)² = - 45 + 7²
(x + 7)² = - 45 + 49
(x + 7)² = 4
x + 7 = ±√4
x + 7 = 2 atau x + 7 = - 2
x = 2 - 7 atau x = - 2- 7
x = - 5 atau x = - 9