X2/5-20=0

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Solution for X2/5-20=0 equation: 


X in (-oo:+oo)

(X^2)/5-20 = 0

1/5*X^2 = 20 // : 1/5

X^2 = 100

X^2 = 100 // ^ 1/2

abs(X) = 10

X = 10 or X = -10

X in { 10, -10 }

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