X^4/3-10x^2/3+21

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Solution for X^4/3-10x^2/3+21 equation: 


x in (-oo:+oo)

(X^4)/3-((10*x^2)/3)+21 = 0

(X^4)/3+(-10/3)*x^2+21 = 0

-10/3*x^2 = -(1/3*X^4+21) // : -10/3

x^2 = 3/10*(1/3*X^4+21)

x^2 = 3/10*(1/3*X^4+21) // ^ 1/2

abs(x) = (3/10)^(1/2)*(1/3*X^4+21)^(1/2)

x = (3/10)^(1/2)*(1/3*X^4+21)^(1/2) or x = -((3/10)^(1/2)*(1/3*X^4+21)^(1/2))

x in { (3/10)^(1/2)*(1/3*X^4+21)^(1/2), -((3/10)^(1/2)*(1/3*X^4+21)^(1/2)) }

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