Multiply.(10x - 7y)2
A. 10x2 + 49y2
B. 100x2 - 140xy + 49y2
C. 100x2 + 49y2
D. 10x2 - 140xy + 49y2
Answer: B
Mathematics
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a. 0
b. 
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Find the union or intersection as indicated.Find A ? B if A = {x|x ? -4} and B = {x|x < 7}
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