Add or subtract as indicated. Write the answer in simplest form.
+ 
A. 
B. 
C. 
D. 
Answer: C
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Find all specified roots.Seventh roots of 1.
A. 1, cis 
, cis 
, cis 
, cis 
, cis 
, cis 
B. -1, cis 
, cis 
, cis 
, cis 
, cis 
, cis 
C. 1, cis 
, cis 
, cis 
, cis 
, cis 
, cis 
D. 1, cis 
, cis 
, cis 
, cis 
, cis 
, cis 
, -1
Find the first four terms of the binomial series for the given function.(1 + 6x)-1/2
A. 1 - 3x - 27x2 - 
x3
B. 1 - 3x + 
x2 - 
x3
C. 1 - 3x + 
x2 - 
x3
D. 1 - 3x + 
x2 - 
x3
Write the word phrase in symbols, using x as the variable.14 less than two times a number
A. 
B. 2(x - 14)
C. 14 - 2x
D. 2x - 14
Provide an appropriate response.Given f(x,y) = x2 + y2, the purpose of finding the critical points is which of the following?(i) find local minimums, if they exist(ii) find local maximums, if they exist(iii) find saddle points, if they exist(iv) find interior points, if they exist
A. Only (i) and (ii) are correct. B. Only (iii) is correct. C. All are correct. D. (i), (ii), and (iii) are all correct.