Expand, where i2 = -1.
4
A. 1 - i
B. -1
C. 1
D. 1 + i
Answer: B
Mathematics
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Evaluate the integral.
A. 6 cos
+ C
B. - 
cos
+ C
C. -6 sin
+ C
D. 
sin
+ C
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Find the vertices of the ellipse.
+ 
= 1
A. (2 + 3
, -2), (2 - 3
, -2)
B. (- 3
, -2), (3
, -2)
C. (-4, -2), (8, -2)
D. (6, -2), (-6, -2)
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Find a natural number b that makes the expression a perfect square trinomial.36x2 + bx + 81
A. 54 B. 108 C. 2916 D. 5832
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Which system of inequalities matches the given calculator-generated graph?
A. y > x2 y > -2 B. y > x2 y < -2 C. y < x2 y > -2 D. y < x2 y < -2
Mathematics