65/5x2-7

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Solution for 65/5x2-7 equation: 


x in (-oo:+oo)

(65/5)*x^2-7 = 0

13*x^2 = 7 // : 13

x^2 = 7/13

x^2 = 7/13 // ^ 1/2

abs(x) = (7/13)^(1/2)

x = (7/13)^(1/2) or x = -(7/13)^(1/2)

x in { (7/13)^(1/2), -(7/13)^(1/2) }

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