Question

Ajuda Urgente!!!!!!!!!!!
Raiz de 12 + x = x

Answer 1

Ola Biih 

√(12 + x) = x

12 + x = x²

x² - x - 12 = 0

delta
d² = 1 + 48 = 49
d = 7

x1 = (1 + 7)/2 = 8/2 = 4

x2 = (1 - 7)/2 = -6/2 = -3

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