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Caso.
Diferencia de cuadrados.
Aplicas.
a² - b² = (a + b)(a - b)
x² - 64 =
x² - 8² =
(x + 8)(x - 8) = 0 Tiene como solución dos raices reales diferentes
x + 8 = 0
x = - 8
o
x - 8 = 0
x = 8
Solución.
(8 , - 8)