x^2-18x+67=0 Solve the quadratic equation by completing the square. Question x^2-18x+67=0 Solve the quadratic equation by completing the square. in progress 0 Math Vivian 6 days 2021-10-14T03:47:33+00:00 2021-10-14T03:47:33+00:00 1 Answer 0

## Answers ( )

Answer:x = 9 ± √14

Step-by-step explanation:x² − 18x + 67 = 0

Move the constant to the other side:

x² − 18x = -67

Take half of -18, square it, and add to both sides.

(-18/2)² = (-9)² = 81

x² − 18x + 81 = -67 + 81

x² − 18x + 81 = 14

Factor the perfect square:

(x − 9)² = 14

Solve for x:

x − 9 = ±√14

x = 9 ± √14