cos2x=-1/4

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Solution for cos2x=-1/4 equation: 


(4-(6*x))^(1/3) = 0

(0.01^1)/3 = 0

Y/4 = 8/y

(15/5)^3-(6*2^2) = 0

(3/8)*z-(1/24) = (-1/2)*z-(3/2)

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