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x² - 6x + 9 = 0 Factorizas trinomio al cuadrado perfecto
(x - 3)² = 0 Tiene como solución dos raices reales iguales
(x - 3)(x - 3) = 0
x - 3 = 0
x = 3
Solución.
(3)
x -3
x -3
-3x -3x = -6x
(x-3)(x-3) = 0
x-3 = 0 x -3 = 0
x = 3 x = 3
CS = ( 3 )