Multiply and, if possible, simplify.(s + t + 6)(s + t - 6)
A. s2 + 2st + t2 - 36
B. s2 + 2st + 12s + 12t + t2 - 36
C. s2 - 2st - 12s - 12t + t2 + 36
D. s2 + t2 - 36
Answer: A
Mathematics
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