x^2/5-0,2=0

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Solution for x^2/5-0,2=0 equation: 


x in (-oo:+oo)

(x^2)/5-0.2 = 0

1/5*x^2 = 0.2 // : 1/5

x^2 = 1

x^2 = 1 // ^ 1/2

abs(x) = 1

x = 1 or x = -1

x in { 1, -1 }

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