Solve the quadratic equation by completing the square.x2 + 4x - 9 = 0
A. {2 + 
}
B. {-2 - 1
, -2 + 1
}
C. {-2 - 
, -2 + 
}
D. {-1 - 
, -1 + 
}
Answer: C
You might also like to view...
True or false? Suppose that lines m and n are both parallel to k and both pass through a point P (where m, n, and k represent distinct lines and P represents a point not on line k). This is possible in Euclidean and Lobachevskian geometries but not in Riemannian geometry.
A. True B. False
Simplify the expression. Use the order of operations.
A. 13 B. 15 C. -12 D. 12
Solve the problem.A restaurant bill of $72.45 was shared equally by 6 people. How much was each person's share? Round your answer to the nearest cent.
A. $12.08 B. $13.19 C. $12.19 D. $13.08
Determine whether the ordered pair is a solution of the equation. Assume that the ordered pair is of the form 
.2x + y = 12; (4, 4)
A. Yes B. No