(x^2-2)/2=7

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Solution for (x^2-2)/2=7 equation: 


x in (-oo:+oo)

(x^2-2)/2 = 7 // - 7

(x^2-2)/2-7 = 0

(x^2-2)/2+(-7*2)/2 = 0

x^2-7*2-2 = 0

x^2-16 = 0

(x^2-16)/2 = 0

(x^2-16)/2 = 0 // * 2

x^2-16 = 0

1*x^2 = 16 // : 1

x^2 = 16

x^2 = 16 // ^ 1/2

abs(x) = 4

x = 4 or x = -4

x in { 4, -4 }

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