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lindseyharrison

  • 3 years ago

1/b - 1/a all over 1/b + 1/a

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  1. lindseyharrison
    • 3 years ago
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    |dw:1346780283393:dw|

  2. hba
    • 3 years ago
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    |dw:1346780297317:dw|

  3. hba
    • 3 years ago
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    |dw:1346780395862:dw|

  4. anonymous
    • 3 years ago
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    or multiply top and bottom by \(ab\) to clear the fractions

  5. lindseyharrison
    • 3 years ago
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    |dw:1346780349837:dw|

  6. lindseyharrison
    • 3 years ago
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    So it would be C

  7. hba
    • 3 years ago
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    ^ right

  8. anonymous
    • 3 years ago
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    \[\frac{\frac{1}{b}-\frac{1}{a}}{\frac{1}{b}+\frac{1}{a}}\times \frac{ab}{ab}\] \[=\frac{a-b}{a+b}\]

  9. anonymous
    • 3 years ago
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    it is always C well at least 75% of the time

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