Simplify the expression. Use positive exponents. Assume variables represent nonzero real numbers.
2
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Solve the problems.One year ago, Tony and May bought a house. In the year since they bought the house, it has depreciated 2% from the amount they paid. Today it is valued at $143,690. How much did they pay for the house?
A. $146,612 B. $146,522 C. $146,622 D. $147,622
Mathematics
Find the square.
2
A. 9x2 + 
xy+ 
y2
B. 9x2 + 3xy + 
y2
C. 9x2 + 
y2
D. 3x2 + 3xy + 
y2
Mathematics
Compute the product.
A. 
B. 
C. 
D. not defined
Mathematics
Solve the equation over the interval [0, 2?).cos 2x = 
- cos 2x
A. ?
B. 
C. 
D. 
Mathematics