Factor the polynomial completely.189b4 - 54b3 + 56by3 - 16y3
A. 27b3(7b - 2) + 8y3(7b - 2)
B. (3b + 2y)(7b - 2)(9b2 - 6by + 4y2)
C. 189b4 - 54b3 - 56by3 + 16y3
D. (21b2 - 6b + 14by - 4y)(9b2 + 6by + 9y2)
Answer: B
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A. ? = 52°10', ? = 76°30', c = 32 B. ? = 49°10', ? = 77°30', c = 27.5 C. ? = 51°10', ? = 75°30', c = 30.5 D. No solution
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A. 
B. 
C. 
D. 
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A) 3 B) 1 C) 6 D) 2 E) 7