x 3
x 1
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x 0
If a2 = b2, which of the following is/are always true?

I. a = b
II. |a| = |b|
III. |a - b| = 0
If a<sup>2</sup> = b<sup>2</sup>, which of the following is/are always true? I. a = b II. |a| = |b| III. |a - b| = 0
If a2 = b2, then a = + or - b.
  • I and III
  • I and II
  • I only
  • II only
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