x^2-7/x

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Solution for x^2-7/x equation: 


D( x )

x = 0

x = 0

x = 0

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

x^2-(7/x) = 0

x^2-7*x^-1 = 0

x^2-7*x^-1 = 0

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

1*x^3 = 7 // : 1

x^3 = 7

x^3 = 7 // ^ 1/3

x = 7^(1/3)

1/x = 0

1*x^-1 = 0 // : 1

x^-1 = 0

x należy do O

x = 7^(1/3)

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