Solve the polynomial inequality and graph the solution set on a number line.x2 - 4x + 4 < 0
A. (-?, 2)
B. (2, ?)
C. ?
D. (-?, ?)
Answer: C
Mathematics
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Find the derivative at each critical point and determine the local extreme values.y = x(9 - x2)
A. 
B. 
C. 
D. 
Mathematics
Solve by trial.x + 0 = 8
A. 0 B. 8 C. 10 D. 7
Mathematics
Identify the equation without completing the square.2y2 - 2x - 2y = 0
A. hyperbola B. parabola C. ellipse D. not a conic
Mathematics
Use the quadratic formula to solve the equation.x2 + 8x + 16 = 0
A. {-4, 4} B. {4 - i, 4 + i} C. {4} D. {-4}
Mathematics