Solve the problem.The width of a rectangle is x - 
feet and its area is 9x3 + 12x2 + 15x - 18 square feet. Write a polynomial that represents the length of the rectangle.
A. 9x2 + 18x - 27 ft
B. 9x2 + 6x + 11 ft
C. 9x2 + 18x + 27 ft
D. 9x2 - 18x + 27 ft
Answer: C
Mathematics
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A. 
B. 
C. 
D. 
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Find the dot product v ? w.v = 
i - 8j,
w = i - j
A. 13
B. 
+ 8
C. 
- 8
D. -13
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Find a complex number w satisfying the conditions. z = 8 + 3i, Re{w} = Re{z}, 
= 
, w ? z
A. w = 8 + 3i B. w = -8 - 3i C. w = 8 - 3i D. w = -8 + 3i
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Find the LCD of the given rational expressions.
, 
A. (x + 8)2 B. x(x + 5)(x - 3) C. x(x + 8)2 D. x(x + 8)(x - 3)
Mathematics