Find the local extrema of the function, if they exist.f(x) = -7x2 - 2x - 9

A. Local maximum at 
B. Local minimum at 
C. Local maximum at 
D. Local maximum at 


Answer: C

Mathematics

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A. 4x2y
B. 2x2y
C. 28xy
D. 2x4y2

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Solve the equation.y3 + 6y2 + 9y = 0

A. 3, -3 B. 0, -3 C. 0, 3 D. 0, -3, 3

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Write the number as a product of a real number and i. Simplify the radical expression.- 

A. 3i
B. -3i
C. 3
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