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allyza_obico

  • 3 years ago

by foil method: (2m-5n) (3n-7n)

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  1. Mimi_x3
    • 3 years ago
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    6mn - 14mn - 15n^2 + 35n^2 6mn - 14mn +20n^2

  2. allyza_obico
    • 3 years ago
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    i need other answer pls

  3. Mimi_x3
    • 3 years ago
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    other answer ?

  4. allyza_obico
    • 3 years ago
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    yes

  5. Mimi_x3
    • 3 years ago
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    but there's only one answer to this question

  6. allyza_obico
    • 3 years ago
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    by horizontal method: (2m-5n) (3m-7n)

  7. Mimi_x3
    • 3 years ago
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    oh horizontal method!? I dont know what a horizontal method sorry

  8. fiddlearound
    • 3 years ago
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    http://www.purplemath.com/modules/polymult.htm

  9. Mimi_x3
    • 3 years ago
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    is horizontal method like foil method ?

  10. fiddlearound
    • 3 years ago
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    (sm-5n)(3m-7n) =(2m-5n)3m - (2m-5n)7n and so on ...

  11. allyza_obico
    • 3 years ago
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    is this a answer

  12. Mimi_x3
    • 3 years ago
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    oh but you would get the same answer anyway

  13. fiddlearound
    • 3 years ago
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    you would, if you didn't mess up :) (2m-5n)(2m-7n) =(2m-5n)3m - (2m-5n)7n =6m^2-15mn - 14mn+35n^2 =6m^2 -29mn +35n^2

  14. fiddlearound
    • 3 years ago
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    which I do a lot ...

  15. Mimi_x3
    • 3 years ago
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    looks complicated , the foil method is better xD

  16. fiddlearound
    • 3 years ago
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    I like box method best !!

  17. Mimi_x3
    • 3 years ago
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    what's box method ?

  18. fiddlearound
    • 3 years ago
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    |dw:1316601780696:dw|

  19. fiddlearound
    • 3 years ago
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    |dw:1316601826720:dw|

  20. Mimi_x3
    • 3 years ago
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    wow~ looks more complicated though, first time seeing that method xD

  21. fiddlearound
    • 3 years ago
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    |dw:1316601875640:dw|

  22. fiddlearound
    • 3 years ago
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    it's cool, especially when you multiply stuff like: (2m-5n+8k)(4m+6) How would you do that with FOIL ? :)

  23. Mimi_x3
    • 3 years ago
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    yeah true but you can still do that with FOIL, and the box one looks complicated

  24. fiddlearound
    • 3 years ago
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    it looks that way, until you do a couple of them :)

  25. fiddlearound
    • 3 years ago
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    but it's really all the same

  26. Mimi_x3
    • 3 years ago
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    Yeah might try it some day xD

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