Factor the expression completely.c2R2 + 2ctR + t2 - m2 (physics)
A. (cR + t + m)(cR + t - m)
B. cR(cR + 2t) + (t + m)(t - m)
C. Cannot be factored.
D. (cR - t + m)(cR + t - m)
Answer: A
Mathematics
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