(7x^2-1/5)^2

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Solution for (7x^2-1/5)^2 equation: 


x in (-oo:+oo)

(7*x^2-(1/5))^2 = 0

(7*x^2-1/5)^2 = 0

7*x^2 = 1/5 // : 7

x^2 = 1/35

x^2 = 1/35 // ^ 1/2

abs(x) = (1/35)^(1/2)

x = (1/35)^(1/2) or x = -(1/35)^(1/2)

x in { (1/35)^(1/2), -(1/35)^(1/2), (1/35)^(1/2), -(1/35)^(1/2) }

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