Find a polynomial of least degree with only real coefficients and having the given zeros. -
, 
, and -4i
A. f(x) = x4 + 26x2 + 48
B. f(x) = x4 - 13x2 - 48
C. f(x) = x4 - 26x2 + 48
D. f(x) = x4 + 13x2 - 48
Answer: D
Mathematics
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Write the vector v in the form ai + bj, given its magnitude 
and the angle ? it makes with the positive x-axis.
= 13, ? = 90°
A. v = 13i - 13j) B. v = 13i C. v = 13i + 13j D. v = 13j
Mathematics
Perform the indicated operation. Write the answer as a mixed number when possible.5
? 2
A. 74
B. 3
C. 14
D. 14
Mathematics
Find the standard form of the equation of the ellipse satisfying the given conditions.Endpoints of major axis: 
and 
; endpoints of minor axis: 
and 
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Mathematics
Simplify. Assume that all variables represent positive real numbers.
A. 4
B. 8
C. 16
D. 4
Mathematics