2/5x2=200

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Solution for 2/5x2=200 equation: 


x in (-oo:+oo)

(2/5)*x^2 = 200 // - 200

(2/5)*x^2-200 = 0

2/5*x^2 = 200 // : 2/5

x^2 = 500

x^2 = 500 // ^ 1/2

abs(x) = 10*5^(1/2)

x = 10*5^(1/2) or x = -(10*5^(1/2))

x in { 10*5^(1/2), -(10*5^(1/2)) }

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