Find the special product.(x + 9)2
A. x2 + 81
B. 81x2 + 18x + 81
C. x + 81
D. x2 + 18x + 81
Answer: D
Mathematics
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A. 
B. 
C. 
D. 
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? 3b
A. 
b
B. 
C. 
D. 11b
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Solve the equation by completing the square.t2 - t - 9 = 0
A. 
B. 
C. 
D. 1 ± 
Mathematics
Which answer choice is equivalent to the given expression?sec u - cos u
A. sin u csc u B. 1 C. tan u sin u D. cot u sin u
Mathematics