(2/5x)(x)=1440

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Solution for (2/5x)(x)=1440 equation: 


x in (-oo:+oo)

(2/5)*x*x = 1440 // - 1440

(2/5)*x*x-1440 = 0

2/5*x^2 = 1440 // : 2/5

x^2 = 3600

x^2 = 3600 // ^ 1/2

abs(x) = 60

x = 60 or x = -60

x in { 60, -60 }

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