(1/3)x^4=7

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Solution for (1/3)x^4=7 equation: 


x in (-oo:+oo)

(1/3)*x^4 = 7 // - 7

(1/3)*x^4-7 = 0

1/3*x^4 = 7 // : 1/3

x^4 = 21

x^4 = 21 // ^ 1/4

abs(x) = 21^(1/4)

x = 21^(1/4) or x = -21^(1/4)

x in { 21^(1/4), -21^(1/4) }

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