Multiply, and then simplify if possible. Assume all variables represent positive real numbers.(
+ -3)(
+ 3
+ 9)
A. 
+ 6
- 9
+ 3
- 27
B. 3
+ 7
- 9
- 27
C. 3
+ 
+ 6
- 9
- 27
D. 6
- 9
+ 3
+ 
- 27
Answer: C
Mathematics
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