Which binomial is a factor of x^4 - 4x^2 - 4x + 8 1. x-2 2. x+2 3.x-4 4.x+4
2 answers:
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Check the picture below.
the first one is simply a serie, using the previous term - 3 times the one after it.
the second one is just an arithmetic sequence, where you add the previous term plus the ordinal position.
the third one is also an arithmetic sequence, simply adding the previous term with 1.4.
recall that an arithmetic sequence is adding up, a geometric sequence is multiplying about.
