8-320000/x^3

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Solution for 8-320000/x^3 equation: 


D( x )

x^3 = 0

x^3 = 0

x^3 = 0

1*x^3 = 0 // : 1

x^3 = 0

x = 0

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

8-(320000/(x^3)) = 0

8-320000*x^-3 = 0

-320000*x^-3 = -8 // : -320000

x^-3 = 1/40000

-3 < 0

1/(x^3) = 1/40000 // * x^3

1 = 1/40000*x^3 // : 1/40000

40000 = x^3

x^3 = 40000 // ^ 1/3

x = 20*5^(1/3)

x = 20*5^(1/3)

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