Factor the expression completely.
?
What will be an ideal response?
Mathematics
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Solve the problem.Find a unit vector perpendicular to plane PQR determined by the points P(2, 1, 3), Q(1, 1, 2) and R(2, 2, 1).
A. 
(-i - 2j - k)
B. 
(i - 2j - k)
C. 
(i - 2j + k)
D. 
(i - 2j - 2k)
Mathematics
Use the substitution formula to evaluate the integral.
A. 
- 2
B. - 2
+ 4
C. 2
- 4
D. 
- 1
Mathematics
Provide an appropriate response.Rank the mean, median, and mode in order of ascending size for a right-skewed distribution.
A. Mode, Mean, Median B. Mode, Median, Mean C. Mean, Median, Mode D. Median, Mode, Mean
Mathematics
Use the distributive property to multiply. Then, if possible, simplify the resulting expression.4(a + b)
A. 4ab B. 8ab C. 4a + 4b D. 4a + b
Mathematics