Question

An equation and the first step in its solution are shown: Equation: x2 + 8x - 9 = 0

Step 1: x2 + 8x +____ = 9+____
What number should be put in the____ to solve the equation by the method of completing the square?
A. 16
B. 12
C. 8
D. 4​

Answer 1

Answer- A-16

Because when doing completing the square, you divide the coefficient of x by 2, which is 4, and the square it which is 16