4/7x2=13

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Solution for 4/7x2=13 equation: 


x in (-oo:+oo)

(4/7)*x^2 = 13 // - 13

(4/7)*x^2-13 = 0

4/7*x^2 = 13 // : 4/7

x^2 = 91/4

x^2 = 91/4 // ^ 1/2

abs(x) = (91/4)^(1/2)

x = (91/4)^(1/2) or x = -(91/4)^(1/2)

x in { (91/4)^(1/2), -(91/4)^(1/2) }

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