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X² +5 = 7(x-1)
X² + 5 = 7x - 7
X² - 7x +5 +7 = 0
X² - 7x + 12 = 0
(x - 4) ( x - 3) = 0
X - 4 = 0
X = 4
X - 3 = 0
X = 3
Respuesta son
X = 4
X = 3