Question

Solve x - 8x - 9 = 0. Add to each side x - 8x = 9 to complete the square.

a. x = -9
b. x = 1
c. x = 9
d. x = 0

Answer 1

To solve the equation x - 8x - 9 = 0, combine like terms, isolate the variable, and then solve for x. The correct answer is a. x = -9/7.

Step-by-step explanation:

To solve the equation x - 8x - 9 = 0, we can simplify it by combining like terms: -7x - 9 = 0. Then, we can add 9 to both sides of the equation to isolate the variable: -7x = 9.

To solve for x, we divide both sides by -7: x = -9/7. Therefore, the correct answer is a. x = -9/7.