Question

An equation and the first step in its solution are shown below.

Equation: x2 + 6x - 9 = 0
Step 1:
x2 + 6x + h = 9+ h
What value of h is used to solve the equation by the method of completing the square?
O A. 9
B. 18
O C. 6
D. 36

Answer 1

Answer: A

Explanation:

To get the third term in completing the square, take half the middle term and square it. Half of 6 is 3, and 3^2 is 9.