(x^2-11)/(x-4)

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Solution for (x^2-11)/(x-4) equation: 


D( x )

x-4 = 0

x-4 = 0

x-4 = 0

x-4 = 0 // + 4

x = 4

x in (-oo:4) U (4:+oo)

(x^2-11)/(x-4) = 0

1*x^2 = 11 // : 1

x^2 = 11

x^2 = 11 // ^ 1/2

abs(x) = 11^(1/2)

x = 11^(1/2) or x = -11^(1/2)

x in { 11^(1/2), -11^(1/2) }

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