Find the first four terms of the indicated expansion.(x + 2)20
A. x20 + 40x19 + 760x18 + 9120x17 + ...
B. x20 + 380x19 + 760x18 + 9120x17 + ...
C. x20 + 40x19 + 760x18 + 4560x17 + ...
D. x20 + 760x19 + 760x18 + 18,240x17 + ...
Answer: A
Mathematics
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A. 
B. 
C. 
D. 
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