[MATH] Question.

Does this make sense?

Factoring (x^4 - 1) to: (x² - 1)(x² + 1)

Entire problem if it helps:


lim x + 1 / x^4 -1
x -> -1- (second negatives implies that it's coming from the left)
 
calc3.jpg


That seem right? This is what I had before I asked, but I'm not sure if that is right, just checking.

EDIT: OOPS! I typed it wrong. At the start it's X MINUS 1, not plus.
 
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