Multiply.(s + t + 4)(s + t - 4)
A. s2 + 2st + 8s + 8t + t2 - 16
B. s2 + t2 - 16
C. s2 - 2st - 8s - 8t + t2 + 16
D. s2 + 2st + t2 - 16
Answer: D
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Perform the indicated operation. Make sure you simplify your final answer.
? 
A. 
B. 
C. 
D. 