9/10=12/x3

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Solution for 9/10=12/x3 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)

9/10 = 12/(x^3) // - 12/(x^3)

9/10-(12/(x^3)) = 0

9/10-12*x^-3 = 0

-12*x^-3 = -9/10 // : -12

x^-3 = 3/40

-3 < 0

1/(x^3) = 3/40 // * x^3

1 = 3/40*x^3 // : 3/40

40/3 = x^3

x^3 = 40/3 // ^ 1/3

x = (40/3)^(1/3)

x = (40/3)^(1/3)

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