Solve the equation by completing the square.x2 + 4x + 53 = 0
A. 2 ± 7i
B. -2 ± 
i
C. 5, -9
D. -2 ± 7i
Answer: D
Mathematics
You might also like to view...
List the intercepts of the graph. 
A. (4, 0), (1, 0), (5, 0), (0, -4) B. (-4, 0), (1, 0) (-5, 0), (0, -4) C. (-4, 0), (0, 4), (0, 1), (0, 5) D. (-4, 0), (0, -4), (0, 1), (0, -5)
Mathematics
Give all solutions of the nonlinear system of equations, including those with nonreal complex components.5x2 - 5y2 = -603x2 + 4y2 = 76
A. {(2, 4), (-2, 4), (2, -4), (-2, -4)} B. {(-2, -4), (-4, -2)} C. {(2, -4), (2, 4)} D. {(2, 4), (4, 2), (-2, -4), (-4, -2)}
Mathematics
Find 18.2% of 360oRound your answer to the nearest tenth.
A. 58.3o B. 69.2o C. 51.1o D. 65.52o E. 43.9o
Mathematics
Find the value of x that satisfies the equation.3.6 + x + 4.5 = 0.9
A. x = -7.2 B. x = 0 C. x = 9 D. x = 1.8
Mathematics