Multiply.(x2 + 4y)(x2 - 4y)

A. x4 - 8x2y - 16y2
B. x4 + 8x2y - 16y2
C. x4 - 8y2
D. x4 - 16y2

Answer: D

Mathematics

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A. ()()
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D. (5x - 4)()

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A. y = 
B. y = 
C. y = 
D. y = 

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Remove the parentheses and simplify, if possible.( 7n3 - 13n +  6) - ( 9n2 +  9n + 12)

A.  7n3-  9n2 - 22n - 6 B. -2n2 - 22n - 6 C. -2n2 - 22n + 18 D.  7n3-  9n2 - 22n + 18

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