(-10x^2-15x)/(4x^3-9x)

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Solution for (-10x^2-15x)/(4x^3-9x) equation:


D( x )

4*x^3-(9*x) = 0

4*x^3-(9*x) = 0

4*x^3-(9*x) = 0

4*x^3-9*x = 0

4*x^3-9*x = 0

x*(4*x^2-9) = 0

4*x^2 = 9 // : 4

x^2 = 9/4

x^2 = 9/4 // ^ 1/2

abs(x) = 3/2

x = 3/2 or x = -3/2

x = 0

x = 0

x in (-oo:-3/2) U (-3/2:0) U (0:3/2) U (3/2:+oo)

(-10*x^2-(15*x))/(4*x^3-(9*x)) = 0

(-10*x^2-15*x)/(4*x^3-9*x) = 0

-10*x^2-15*x = 0

-5*x*(2*x+3) = 0

2*x+3 = 0 // - 3

2*x = -3 // : 2

x = -3/2

-5*x*(x+3/2) = 0

4*x^3-9*x = 0

x*(4*x^2-9) = 0

4*x^2 = 9 // : 4

x^2 = 9/4

x^2 = 9/4 // ^ 1/2

abs(x) = 3/2

x = 3/2 or x = -3/2

x*(x-3/2)*(x+3/2) = 0

(-5*x*(x+3/2))/(x*(x-3/2)*(x+3/2)) = 0

( -5*x )

-5*x = 0 // : -5

x = 0

( x+3/2 )

x+3/2 = 0 // - 3/2

x = -3/2

x in { 0}

x in { -3/2}

x belongs to the empty set

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