80/x^4=5

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Solution for 80/x^4=5 equation: 


D( x )

x^4 = 0

x^4 = 0

x^4 = 0

1*x^4 = 0 // : 1

x^4 = 0

x = 0

x in (-oo:0) U (0:+oo)

80/(x^4) = 5 // - 5

80/(x^4)-5 = 0

80*x^-4 = 5 // : 80

x^-4 = 1/16

-4 < 0

1/(x^4) = 1/16 // * x^4

1 = 1/16*x^4 // : 1/16

16 = x^4

x^4 = 16 // ^ 1/4

abs(x) = 2

x = 2 or x = -2

x in { 2, -2 }

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