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4x² - 9 = 0
4x² = 9
x² = 9/4
x = +/-√9/4 Tiene como solución dos raices reales distintas
x = √9/4
x = 3/2 Porque (3/2)(3/2) = 9/4
o
x = - √9/4
x = - 3/2 Porque (- 3/2)(- 3/2) = 9/4
Solución.
(3/2 , - 3/2)