8/2=-30/x

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Solution for 8/2=-30/x equation: 


D( x )

x = 0

x = 0

x = 0

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

8/2 = -30/x // + -30/x

8/2-(-30/x) = 0

30*x^-1+8/2 = 0

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

x^-1 = -2/15

-1 < 0

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

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

-15/2 = x^1

x = -15/2

x = -15/2

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