2/5x^2=160

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Solution for 2/5x^2=160 equation: 


x in (-oo:+oo)

(2/5)*x^2 = 160 // - 160

(2/5)*x^2-160 = 0

2/5*x^2 = 160 // : 2/5

x^2 = 400

x^2 = 400 // ^ 1/2

abs(x) = 20

x = 20 or x = -20

x in { 20, -20 }

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