(2/5)x^2=100

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Solution for (2/5)x^2=100 equation: 


x in (-oo:+oo)

(2/5)*x^2 = 100 // - 100

(2/5)*x^2-100 = 0

2/5*x^2 = 100 // : 2/5

x^2 = 250

x^2 = 250 // ^ 1/2

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

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

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

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