Factor by any method.(r + s)2 - 16
A. (r + s + 4)(r + s - 4)
B. (r + s + 4)(r - s - 4)
C. (r2 + 4)(s2 - 4)
D. (r - s + 4)(r - s - 4)
Answer: A
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, -1 < t ? 1
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B. 
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D. 
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