Simplify the expression. Assume all variables represent positive real numbers.
- 
+ 
A. 13x
- 6
B. 13
- 
C. 13x
- 6
D. 12x
- 6
Answer: A
Mathematics
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A. (2, -3) B. (-3, 2) C. ? D. (3, -2)
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Simplify.
A. 1 - x2
B. 
C. 1
D. 
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