Answer:
The answer to your question is letter C. 16
Step-by-step explanation:
Data
Polynomial x² + 8x + ______
To complete the square,
1.- Just divide the coefficient of middle term by two
Middle term = 8x
8/2 = 4
2.- Write 4² in both sides of the equations.
x² + 8x + 4² + y² + 10y + 25 = - 15 + 4²
3.- Expand 4²
4² = 16
