21-3x4/18

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Solution for 21-3x4/18 equation: 


x in (-oo:+oo)

21-((3*x^4)/18) = 0

(-1/6)*x^4+21 = 0

-1/6*x^4 = -21 // : -1/6

x^4 = 126

x^4 = 126 // ^ 1/4

abs(x) = 126^(1/4)

x = 126^(1/4) or x = -126^(1/4)

x in { 126^(1/4), -126^(1/4) }

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