21-4^2/3x4^2

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Solution for 21-4^2/3x4^2 equation: 


x in (-oo:+oo)

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

-16/3*x^16 = -21 // : -16/3

x^16 = 63/16

x^16 = 63/16 // ^ 1/16

abs(x) = (63/16)^(1/16)

x = (63/16)^(1/16) or x = -(63/16)^(1/16)

x in { (63/16)^(1/16), -(63/16)^(1/16) }

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