14-07-2017
Mathematics

contestada

solve:

x^2 = 81

x^2 = -9

x^2 = 20

3x^2 = 125

Respuesta :

Banabanana Banabanana

14-07-2017

x^2 = 81
x = ±√81
x = ±9

x^2 = -9 no solutions

x^2 = 20
x = ±√20
x = ±2√5

[tex]3x^2 = 125 \\ x^2 = \frac{125}{3} \\ x=б \sqrt{ \frac{125}{3} } [/tex]

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