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17 September, 07:45

Solve x2 - 64 = 0.

1. Isolate x2: x2 = 64

2. Apply the square root property of equality:

3. Isolate the variable: x = ? x=?

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Answers (1)
  1. 17 September, 10:32
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    Your steps are correct. To isolate the variable, you need to square root both sides, and it's worth noting that every positive number has two solutions to its roots: a positive number and a negative number.

    For example, sqrt64 is not on 8, but - 8 as well because - 8 * - 8 = 64

    Therefore, x = 8 and x = - 8
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