Write the number in trigonometric form. Let 0° ? ? < 360°.5 + 5i
A. 5
(cos 45° + i sin 45°)
B. 5
(cos 225° + i sin 225°)
C. 5
(cos 135° + i sin 135°)
D. 5
(cos 315° + i sin 315°)
Answer: A
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Graph the function using its vertex, axis of symmetry, and intercepts.f(x) = x2 - 4x - 5
A. vertex (2, 9)
intercepts (5, 0), (- 1, 0), (0, 5)
B. vertex (-2, 9)
intercepts (-5, 0), (1, 0), (0, 5)
C. vertex (-2, -9)
intercepts (-5, 0), (1, 0), (0, -5)
D. vertex (2, -9)
intercepts (5, 0), (- 1, 0), (0, -5)
Evaluate the improper integral or state that it is divergent.
A. 0.3333 B. -4.667 C. -2.3333 D. Divergent
Write the partial fraction decomposition of the rational expression.
A. 
+ 
B. 
+ 
C. 
+ 
D. 
+ 
Factor completely. If the polynomial cannot be factored, say it is prime.12x3 + 8x2y - 15xy2 - 10y3
A. (4x2 + 5y2)(3x - 2y) B. (12x2 - 5y2)(x + 2y) C. (4x2 - 5y)(3x + 2y) D. (4x2 - 5y2)(3x + 2y)