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16 May, 11:11

Solve x2 - 64 = 0.

1. Isolate x2: x2 = 64

2. Apply the square root property of equality: Vx2 = / 64

3. Isolate the variable: x = x=

+3
Answers (2)
  1. 16 May, 14:23
    -1
    x = ±8

    Step-by-step explanation:

    x^2 - 64 = 0

    Add 64 to each side

    x^2 - 64 + 64 = + 64

    x^2 = 64

    Take the square root of each side

    sqrt (x^2) = ±sqrt (64)

    x = ±8
  2. 16 May, 14:35
    +1
    -8, 8

    Step-by-step explanation:

    x² - 64 = 0

    x² = 64

    x = + / - sqrt (64)

    x = + / - 8
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