(3b^2-9)/(b-8)

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Solution for (3b^2-9)/(b-8) equation: 


D( b )

b-8 = 0

b-8 = 0

b-8 = 0

b-8 = 0 // + 8

b = 8

b in (-oo:8) U (8:+oo)

(3*b^2-9)/(b-8) = 0

3*b^2 = 9 // : 3

b^2 = 3

b^2 = 3 // ^ 1/2

abs(b) = 3^(1/2)

b = 3^(1/2) or b = -3^(1/2)

b in { 3^(1/2), -3^(1/2) }

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