3a-9/3a-6*a/a^2-9

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Solution for 3a-9/3a-6*a/a^2-9 equation: 


D( a )

a^2 = 0

a^2 = 0

a^2 = 0

1*a^2 = 0 // : 1

a^2 = 0

a = 0

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

3*a-((9/3)*a)-((6*a)/(a^2))-9 = 0

3*a-3*a-6*a^-1-9 = 0

-6*a^-1 = 9 // : -6

a^-1 = -3/2

-1 < 0

1/(a^1) = -3/2 // * a^1

1 = -3/2*a^1 // : -3/2

-2/3 = a^1

a = -2/3

a = -2/3

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