Simplify the expression. Assume that all variables are positive when they appear.2
- 3
A. 12
B. 6
- 3
C. 0
D. cannot simplify
Answer: C
Mathematics
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A. 
B. 
C. 
D. 
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Simplify.-8x(9x + 6)
A. -120x2 B. -72x2 - 48x C. 9x2 - 48x D. -72x2 + 6x
Mathematics
Express the sum using summation notation. Use 1 as the lower limit of summation and i for the index of summation.3 + 6 + 9 + . . . + 27
A. 
B. 
C. 
D. 
Mathematics
Graph the equation.(x - 4)2 + y2 = 25 
A. 
B. 
C. 
D. 
Mathematics