(X^2-9X+18)/(X-6)

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Solution for (X^2-9X+18)/(X-6) equation: 


D( X )

X-6 = 0

X-6 = 0

X-6 = 0

X-6 = 0 // + 6

X = 6

X in (-oo:6) U (6:+oo)

(X^2-(9*X)+18)/(X-6) = 0

(X^2-9*X+18)/(X-6) = 0

X^2-9*X+18 = 0

X^2-9*X+18 = 0

DELTA = (-9)^2-(1*4*18)

DELTA = 9

DELTA > 0

X = (9^(1/2)+9)/(1*2) or X = (9-9^(1/2))/(1*2)

X = 6 or X = 3

(X-3)*(X-6) = 0

X-3 = 0

X-3 = 0 // + 3

X = 3

X = 3

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