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2x²=67+5
2x²= 72
x²= 72/2
x²= 36
x= √36
X= ± 6
2x² - 5 = 67
2x² = 67 + 5
2x² = 72
x² = 72/2
x² = 36
Toda variable elevada al cuadrado siempre se le saca la raíz cuadrada.
x = √36
x = 6
Tenemos dos solución.
Solución.
"x = 6" ó "x = - 6".