Solve the equation by completing the square.x2 + 3x - 9 = 0
A. 
B. -3 ± 3
C. 
D. 
Answer: D
You might also like to view...
Use the discriminant to determine the number and type of solutions for the equation.x2 + 6x - 7 = 0
A. Two complex-number solutions B. One real-number solution C. Two real-number solutions
Determine whether the given solution is correct. If it is not, find the solution.Is 
the solution for -7x + 10 = -4 + 8x?
A. No; x = 
B. No; x = - 
C. Yes
D. No; x = 
Solve the problem by estimating.The highest point in State X is at an elevation of 8478 feet and the highest point in State Y is at an elevation of 3135 feet. By rounding to the nearest hundred, estimate the difference between these two points.
A. 5343 ft B. 5400 ft C. 5300 ft D. 5000 ft
Solve.3x + 2y + z = -174x - 5y - z = 252x + y + 2z = -15
A. (-1, -5, -4) B. (-4, -1, -5) C. (-1, -4, -5) D. (-4, -5, -1)