Like, where does the “-1” come from? I feel like I am missing something painfully obvious…
Better format:
Factor x^(2)(x + 2) – (x + 2) = (x + 2)(x^(2) – 1) = (x + 2)(x – 1)(x + 1)
I understand that you’re supposed to factor out the (x+2), but for some reason I can’t grasp the sequence of orders happening there…
In: 0
On the left term, the x^2 is obvious factor. On the right term, 1 is a factor, because (x+2)*1 = (x+2). You could write it (x^2 ) (x+2) + (-1) (x+2).
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