Question

Solve x2 – 64 = 0.

1. Isolate x2x2 = 64
2. Apply the square root property of equality: x2 = +/64
3. Isolate the variable:

Answer 1

The value of x is -8 and 8

Explanation:

By following the steps you had given :

1.

x² - 64 = 0

x² = 64

2.

x² = 64

x = +-√64

3.

x = +√64

= +8

x = -√64

= -8