allyza_obico
by foil method:
(2m5n) (3n7n)



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Mimi_x3
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6mn  14mn  15n^2 + 35n^2
6mn  14mn +20n^2

allyza_obico
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i need other answer pls

Mimi_x3
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other answer ?

allyza_obico
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yes

Mimi_x3
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but there's only one answer to this question

allyza_obico
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by horizontal method:
(2m5n) (3m7n)

Mimi_x3
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oh horizontal method!? I dont know what a horizontal method sorry


Mimi_x3
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is horizontal method like foil method ?

fiddlearound
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(sm5n)(3m7n)
=(2m5n)3m  (2m5n)7n
and so on ...

allyza_obico
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is this a answer

Mimi_x3
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oh but you would get the same answer anyway

fiddlearound
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you would, if you didn't mess up :)
(2m5n)(2m7n)
=(2m5n)3m  (2m5n)7n
=6m^215mn  14mn+35n^2
=6m^2 29mn +35n^2

fiddlearound
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which I do a lot ...

Mimi_x3
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looks complicated , the foil method is better xD

fiddlearound
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I like box method best !!

Mimi_x3
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what's box method ?

fiddlearound
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dw:1316601780696:dw

fiddlearound
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dw:1316601826720:dw

Mimi_x3
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wow~ looks more complicated though, first time seeing that method xD

fiddlearound
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dw:1316601875640:dw

fiddlearound
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it's cool, especially when you multiply stuff like:
(2m5n+8k)(4m+6)
How would you do that with FOIL ?
:)

Mimi_x3
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yeah true but you can still do that with FOIL, and the box one looks complicated

fiddlearound
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it looks that way, until you do a couple of them :)

fiddlearound
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but it's really all the same

Mimi_x3
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Yeah might try it some day xD