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Example Question #1991 : Sat Mathematics
Factor
Possible Answers:
cannot be factored
Correct answer:
Explanation:
This expression can be factored by grouping.
x2 can be factored out of the first two terms.
-4 can be factored out of the second two terms.
Now we can factor out the term (x-3).
x2 - 4 is a difference of squares. It can be factored into (x + 2)(x - 2).
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