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What are the excluded values of x for [tex] \frac{x+1}{x^2-1} [/tex]

A. x = –1, x = 0, x = 1
B. x = –1, x = 0
C. x = 0, x = 1
D. x = –1, x = 1

Respuesta :

WojtekR
Denominator:

[tex]x^2-1=(x+1)(x-1)=\big(x-(-1)\big)(x-1)[/tex]

so excluded values are x =  -1 and x = 1.

Answer D.

The answer would be D. x=-1, x=1


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