Multiply and simplify any radicals in your answer. Assume that all variables represent positive real numbers.(9x
+ 2
)(9x
- 2
)
A. 162x2 - 4x
B. 81x
- 4
C. 81x
+ 18x
+ 4
D. 162x2 - 36x
+ 4x
Answer: A
Mathematics
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A. 
B. 
C. 
D. 
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