Ola Andre
3x² = 63 - 12x
3x² + 12x - 63 = 0
x² + 4x - 21 = 0
x² + 4x = 21
x² + 4x + 4 = 25
(x + 2)² = 5²
x + 2 = 5
x = 3 filhos
pronto
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Verified answer
Ola Andre
3x² = 63 - 12x
3x² + 12x - 63 = 0
x² + 4x - 21 = 0
x² + 4x = 21
x² + 4x + 4 = 25
(x + 2)² = 5²
x + 2 = 5
x = 3 filhos
pronto