SOLUTION: How would factor these trinomial factors z^2-4?

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Question 943324: How would factor these trinomial factors z^2-4?
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
How would factor these trinomial factors z^2-4?
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It's not a trinomial.
It's a difference of 2 squares.
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a%5E2+-+b%5E2+=+%28a-b%29%2A%28a%2Bb%29