1/5x^2-18=39.8

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Solution for 1/5x^2-18=39.8 equation: 


x in (-oo:+oo)

(1/5)*x^2-18 = 39.8 // - 39.8

(1/5)*x^2-39.8-18 = 0

1/5*x^2 = 57.8 // : 1/5

x^2 = 289

x^2 = 289 // ^ 1/2

abs(x) = 17

x = 17 or x = -17

x in { 17, -17 }

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