Multiply, and then simplify if possible. Assume all variables represent positive real numbers.(
+ 3)(
- 3)
A. 13 - 2
B. 10
C. 4
D. 22
Answer: C
Mathematics
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Provide an appropriate response.Find the direction in which the function is increasing most rapidly at the point P0.f(x, y, z) = xy - ln(z), P0(2, -2, 2)
A. 
(-4i - 4j + k)
B. 
(-4i + 4j - k)
C. 
(-4i + 4j - k)
D. 
(-4i + 4j - k)
Mathematics
Solve.How many ways can a president, vice-president, secretary, and treasurer be chosen from a club with 8 members?
A. 1680 B. 70 C. 24 D. 32
Mathematics
Simplify the expression.
÷ 
A. 
B. 
C. 
D. 
Mathematics
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
Mathematics