Factor the expression completely.
?
What will be an ideal response?
Mathematics
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Find an equation of the following curve.An ellipse centered at the origin having vertex at (0, -9) and eccentricity equal to 
A. 
+ 
= 1
B. 
- 
= 1
C. 
- 
= 1
D. 
+ 
= 1
Mathematics
Perform the indicated operation and, if possible, simplify.
? 
A. 
B. 
C. 
D. 
Mathematics
Simplify the expression.4 sin ? cos3 ? - 4 sin3 ? cos ?
A. sin 2? cos 2? B. 4 sin ? cos ? C. sin 4? D. 4 sin ? cos ? cos 2?
Mathematics
Let v and w be two vectors in the plane with given magnitudes. The angle between v and w is ?. Find the expression. Round the answer to the nearest tenth.
= 14, 
= 6, ? = 24°
Find 
A. 5.7 B. 18.4 C. -281.0 D. 25.4
Mathematics