Find the product.(4x + 9)(4x - 9)
A. 16x2 + 72x - 81
B. 16x2 - 72x - 81
C. x2 - 81
D. 16x2 - 81
Answer: D
Mathematics
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?
?
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C. 
D. 
E. 
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Collect like terms and write in descending order.5a6 - 3a6 + 14a5 + 10a6 - 11a5
A. 15a6 B. 15a11 C. Can't be simplified D. 12a6 + 3a5
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Solve for the variable.2(x + 1) = -3(x + 6) + 21
A. x = 
B. x = 
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B. 
C. 
D. 
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