3/x+2/7x^2

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Solution for 3/x+2/7x^2 equation: 


D( x )

x = 0

x = 0

x = 0

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

(2/7)*x^2+3/x = 0

2/7*x^2+3*x^-1 = 0

x^-1*(2/7*x^3+3) = 0

2/7*x^3 = -3 // : 2/7

x^3 = -21/2

x^3 = -21/2 // ^ 1/3

x = -(21/2)^(1/3)

1/x = 0

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

x^-1 = 0

x naleu017Cy do O

x = -(21/2)^(1/3)

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