Simplify. Be sure to rationalize all denominators. Assume that all variables represent positive real numbers.
A. 
B. 2
C. 
D. 
Answer: C
Mathematics
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Solve.5x + 2y + z = -112x - 3y - z = 177x + y + 2z = -4
A. (-3, 0, 4) B. (3, 0, -4) C. (0, 6, -1) D. (0, -6, 1)
Mathematics
Use the FOIL method to find the product.(x - 12y)(x - 11y)
A. x - 23xy + 132y B. x2 - 23xy + 132y2 C. x2 - 23xy - 23y2 D. x2 - 26xy + 132y2
Mathematics
Multiply and simplify.
? 
A. 
B. 
C. 
D. 120xy
Mathematics
Rationalize the denominator. Assume that no radicands were formed by raising negative numbers to even powers. 
A. 
B. 
- 
C. 
D. 
Mathematics