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El numero = x
El doble del numero = 2x
(x)(2x) = 288
2x² = 288
x² = 288/2
x² = 144
x = √144 Tiene 2 soluciones reales
x = 12 Porque 12 * 12 = 144
o
x = -√144
x = - 12 Porque (- 12)( - 12) = 144
Solucion.
(12 , - 12)