12-09-2018
Mathematics

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Al cuadrado de un número se suma 3 igual 84. Encuentra las dos soluciones

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mathstudent55 mathstudent55

12-09-2018

El numero es x.

El quadrado del numero es x^2.

"Al cuadrado de un número se suma 3": x^2 + 3

"Al cuadrado de un número se suma 3 igual 84.": x^2 + 3 = 84

x^2 + 3 = 84

x^2 = 81

x = -9 o x = 9

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