(3x/(x^2-9))((2x+6)/30)

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Solution for (3x/(x^2-9))((2x+6)/30) equation: 


D( x )

x^2-9 = 0

x^2-9 = 0

x^2-9 = 0

1*x^2 = 9 // : 1

x^2 = 9

x^2 = 9 // ^ 1/2

abs(x) = 3

x = 3 or x = -3

x in (-oo:-3) U (-3:3) U (3:+oo)

((3*x)/(x^2-9))*((2*x+6)/30) = 0

(3*x*(2*x+6))/(30*(x^2-9)) = 0

( 2*x+6 )

2*x+6 = 0 // - 6

2*x = -6 // : 2

x = -6/2

x = -3

( 3*x )

3*x = 0 // : 3

x = 0

x in { -3} 

x = 0

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