Rationalize the numerator. Assume that all radicands represent positive real numbers.
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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xy + y + 7x + 7
A. (x + 1)(7y + 7) B. (x + 1)(y + 7) C. (x + 7)(y + 1) D. (7x + 7)(y + 1)
Mathematics
Factor completely.2x2 - 18x + 40
A. 2(x - 20)(x + 1) B. (2x - 8)(x - 5) C. Prime D. 2(x - 4)(x - 5)
Mathematics
Perform the indicated operations and simplify the result. Leave the answer in factored form.
+ 
A. 
B. 
C. 
D. 6x + 3
Mathematics
Solve the problem.10 people are bowling: 3 use a black ball and 7 use a blue ball. How many different black and blue bowling ball sequences can occur on the rack?
A. 117 B. 120 C. 604,800 D. 125
Mathematics