Simplify the expression by dividing out common factors. If the expression cannot be simplified by dividing out common factors, so state.
A. x7
B. 8
C. x8 - x
D. x9
Answer: A
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Use Taylor series to evaluate the limit.
x2
A. -10 B. 10 C. 1 D. -1
Find all local extreme values of the given function and identify each as a local maximum, local minimum, or saddle point.
A. 
saddle point; 
saddle point; 
saddle point; 
saddle point; 
saddle point
B. 
local maximum; 
local maximum; 
local minimum; 
local minimum
C. 
saddle point; 
local maximum; 
local minimum
D. 
saddle point; 
local maximum; 
local maximum; 
local minimum; 
saddle point; 
saddle point; 
local minimum; 
saddle point; 
saddle point
Collect like terms.9.2a + 9.6b - 1.8a - 6.5b
A. 7.4a + 16.1b B. -7.4a + 3.1b C. 11.0a + 16.1b D. 7.4a + 3.1b
Evaluate the indicated power of i.i52
A. -1 B. 1 C. i D. -i