Add.(2r2s2 + 3r2s - 7rs) + (7r2s2 - 2r2s + 7rs - 4)
A. 9r2s2 + r2s - 4
B. 9r2s2 + 5r2s - 14rs - 4
C. 9r2s2 + 5r2s + 14rs + 4
D. 9r2s2 + r2s - 14rs - 4
Answer: A
Mathematics
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x + 6
A. 
B. 
C. 
D. 
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Graph the ellipse described.Foci at (- 4
, 0) and (4
, 0)Vertices at (-8, 0), (8, 0)
A. 
B. 
C. 
D. 
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Use a calculator to evaluate the expression. Round the result to five decimal places.log 51.237
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Mathematics