For what value of x is the rational expression below undefined x+8/x^2-2x-24

Question

Mathematics

Georgia Wade

30 April, 20:15

For what value of x is the rational expression below undefined x+8/x^2-2x-24

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Answers (1)

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Kenyon Kim · Answer 1

X is undefined when the denominator is equal to zero, therefor we only need to factor X^2-2x-24.

this factors to (x-6) (x+4)

x-6=0 x+4=0

x=6 x = - 4

The expression is undefined when x = 6 or - 4