Evaluate.i22
A. -i
B. i
C. -1
D. 1
Answer: C
Mathematics
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Add or subtract vertically.Subtract x4 - 4x3 + x2 - 9x from 4x4 + 9x3 + 5.
A. 3x4 + 13x3 + x2 - 4x B. 3x4 + 5x3 - x2 - 9x + 5 C. 3x4 + 13x3 - x2 + 9x + 5 D. 3x4 + 13x3 + x2 - 9x + 5
Mathematics
Write the complex number in rectangular form.8
A. 
+ 
i
B. 
+ 
i
C. 4
+ 4i
D. 4 + 4
i
Mathematics
Find an equation of the parabola described.Vertex at (0, 0); axis of symmetry the x-axis; containing the point (3, 9)
A. x2 = 
y
B. y2 = 
x
C. y2 = 27x
D. x2 = 27y
Mathematics
Calculate 
, and 
when defined.
?
?
A. 
,
B. 
, 
C. 
,
D. 
, 
E. 
,
Mathematics