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anonymous

  • 5 years ago

Hi! I was wondering if someone could help me solve ((a^2)/(a-b))+((b^2)/(b-a))

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  1. anonymous
    • 5 years ago
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    I know I need a common denominator

  2. anonymous
    • 5 years ago
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    denominator = (a-b)(b-a)

  3. anonymous
    • 5 years ago
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    a-b is the opposite of b-a, try it with numbers

  4. anonymous
    • 5 years ago
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    So I would multiply a2 by (b-a) and b2 with (a-b)?

  5. anonymous
    • 5 years ago
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    ...so you have a common denominator if you multiply one of them by -1

  6. anonymous
    • 5 years ago
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    a^2/(a-b) - b^2/(a-b)

  7. anonymous
    • 5 years ago
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    yes marie

  8. anonymous
    • 5 years ago
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    (a^2 - b^2)/(a-b)

  9. anonymous
    • 5 years ago
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    ...then difference of squares

  10. anonymous
    • 5 years ago
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    ... in the numerator

  11. anonymous
    • 5 years ago
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    ...cancels with denominator

  12. anonymous
    • 5 years ago
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    ...leaving...

  13. anonymous
    • 5 years ago
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    I see it now!

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spraguer (Moderator)
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