(7x^2-18x+8)/(x-2)

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Solution for (7x^2-18x+8)/(x-2) equation: 


D( x )

x-2 = 0

x-2 = 0

x-2 = 0

x-2 = 0 // + 2

x = 2

x in (-oo:2) U (2:+oo)

(7*x^2-(18*x)+8)/(x-2) = 0

(7*x^2-18*x+8)/(x-2) = 0

7*x^2-18*x+8 = 0

7*x^2-18*x+8 = 0

DELTA = (-18)^2-(4*7*8)

DELTA = 100

DELTA > 0

x = (100^(1/2)+18)/(2*7) or x = (18-100^(1/2))/(2*7)

x = 2 or x = 4/7

(x-4/7)*(x-2) = 0

x-4/7 = 0

x-4/7 = 0 // + 4/7

x = 4/7

x = 4/7

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