2*(2/x+10)+10

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Solution for 2*(2/x+10)+10 equation: 


D( x )

x = 0

x = 0

x = 0

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

2*(2/x+10)+10 = 0

2*(2*x^-1+10)+10 = 0

2*(2*x^-1+10)+10 = 0

4*x^-1+30 = 0

4*x^-1+30 = 0

4*x^-1 = -30 // : 4

x^-1 = -15/2

-1 < 0

1/(x^1) = -15/2 // * x^1

1 = -15/2*x^1 // : -15/2

-2/15 = x^1

x = -2/15

x = -2/15

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