Question

What number would be added to both sides in order to complete the square when solving y^2 + 8x = 9?

A. 16
B. 18
C. 64
D. 81

Answer 1

Answer: A. 16

Explanation:

To complete the square when solving the equation y^2 + 8x = 9, we need to add a number to both sides of the equation. The number we add is half the coefficient of x squared, which in this case is 8x.

The coefficient of x squared is 8, so half of 8 is 4. We square 4 to get 16.

Therefore, the correct answer is A. 16.