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anonymous

  • one year ago

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  1. anonymous
    • one year ago
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    @Nnesha

  2. Nnesha
    • one year ago
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    same formula

  3. anonymous
    • one year ago
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    \[\frac{ 9! }{ 2! (9-2)! }\]

  4. Nnesha
    • one year ago
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    looks good

  5. anonymous
    • one year ago
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    \[\frac{ 9*8*7*6*5*4*3*2*1 }{ 2*1 (7)! }\]

  6. Nnesha
    • one year ago
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    that's right but here is a shortcut \[\huge\rm \frac{ 9 · 8 · 7! }{ 2!(7)! } =\] there is 7! at the misdemeanor so you can expand 9! to 7! so you cancel them out then we don't need a calculator

  7. anonymous
    • one year ago
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    but then wouldnt it just be 9*8

  8. Nnesha
    • one year ago
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    \[\huge\rm \frac{ 9 · 8 ·\cancel{7!} }{ 2!\cancel{(7)!} } =\]

  9. Nnesha
    • one year ago
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    yes right

  10. Nnesha
    • one year ago
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    but don't forget the 2! at the denominator

  11. anonymous
    • one year ago
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    then 2 goes into 8 2 times and 8/2=4 so 9*4=36?

  12. Nnesha
    • one year ago
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    right

  13. anonymous
    • one year ago
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    k thx

  14. Nnesha
    • one year ago
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    np :=)

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