Express the product as a sum containing only sines or cosines.sin 
cos 
A. 
[cos(10?) - sin(8?)]
B. 
sin cos(9?)
C. 
[cos(5?) + sin(4?)]
D. 
[sin(5?) - sin(4?)]
Answer: D
Mathematics
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A. [-2, 2] B. (-2, 2) C. [-2, 2) D. (-2, 2]
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Add or subtract as indicated.
+ 
A. 
B. 
C. 
D. 
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Factor completely.5x3 + 5x2y - 100xy2
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