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posted by on .

Hello, i need help doing a proof, im pretty sure on how to do it but not that way my teacher wants it. He wants it in a chart form by taking splitting up both side.

i have to show that |a-b|=|b-a|

  • Precalc - ,

    If a>b, it becomes a-b = a-b
    If a<b, it becomes b-a = b-a
    If a=b it becomes 0 = 0
    So it is always true

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