Factor the polynomial completely.r2 - 4r + 4 - s2

A. (r - 2 + s)(r + 2 + s)
B. (r - 4 + s)(r + 4 - s)
C. (r - 2 + s)(r - 2 - s)
D. (r + 2 + s)(r + 2 - s)


Answer: C

Mathematics

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A. - 
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