Multiply.(7x2 + y2 - 7xy)(x2 + 7y2 - xy)
A. 7x4 - 57x2y2 + 14x3y - 7y4 + xy3 - 49x2y3
B. 7x4 + 57x2y2 - 14x3y + 7y4 - 50xy3
C. 7x4 - 57x2y2 + 14x3y - x3
- 7y4 - 50xy3
D. 7x4 + 57x2y2 - 14x3y + x3
+ 7y4 + xy3 - 49x2y3
Answer: B
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with B in quadrant III, and 
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A. 
B. 
C. - 
D. - 
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