Given 3 + i is a root, determine all other roots of f(x) = x4 - 12x3 + 59 x2 - 138x + 130.
A. x = 3 - i, 3 ± 2i
B. x = 3 - i, 2 ± 3i
C. x = 3 + i, 3 ± 2i?, 2 - i
D. x = 3 - i, 2 ± i
E. x = 3 - i, 3 - 2i?, 2 - i
Answer: A
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on the diamond-shaped region 
A. Absolute maximum: 
at 
and 
absolute minimum: 0 at 
and 
B. Absolute maximum: 
at 
and 
absolute minimum: 0 at 
C. Absolute maximum: 
at 
and 
absolute minimum: 18 at 
and 
D. Absolute maximum: 18 at 
and 
absolute minimum: 0 at 
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A. 60
B. 6
C. 
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