Factor the four-term polynomial by grouping.6x2 + 8xy - 9xy - 12y2
A. (2x + 3y)(3x + 4y)
B. (6x - 3y)(x + 4y)
C. (2x - 3)(3x + 4)
D. (2x - 3y)(3x + 4y)
Answer: D
Mathematics
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Find the horizontal asymptote, if any, of the rational function.f(x) = 
A. y = 0 B. y = 2 C. y = 8 D. None
Mathematics
Find all the local maxima, local minima, and saddle points of the function.
A. f
= 20, saddle point; f
= 20, saddle point
B. f
= - 60, local maximum
C. f
= 20, saddle point
D. f
= 20, local minimum; f
= 20, local minimum
Mathematics
Evaluate the expression.
A. 
B. - 
C. 1
D. 
Mathematics
Solve the inequality and graph the solution.-4 < 
A. x < -12
B. x > -12
C. x ? -12
D. x ? -12
Mathematics