anonymous
  • anonymous
by foil method: (15x + 7y) (15x-7y)
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
where are you stuck with it ?
anonymous
  • anonymous
would you like to try, so we see where the difficulty is ?
anonymous
  • anonymous
??

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anonymous
  • anonymous
i need a answer plss
Mimi_x3
  • Mimi_x3
225x^2 - 49y^2
anonymous
  • anonymous
http://www.algebrahelp.com/lessons/simplifying/foilmethod/pg2.htm
anonymous
  • anonymous
with solution plss
anonymous
  • anonymous
arctan(-1)
Mimi_x3
  • Mimi_x3
http://www.wolframalpha.com/input/?i=%2815x+%2B+7y%29+%2815x-7y%29
anonymous
  • anonymous
Mimi , wolfram didn't use FOIL though :)
Mimi_x3
  • Mimi_x3
lols i know, its obvious that she just wanted the answer (:
anonymous
  • anonymous
allyza do you want to try doing the FOIL method ?
anonymous
  • anonymous
First Outer Inner Last Only 4 easy things to do ...
anonymous
  • anonymous
we can do it step by step , if you want to
anonymous
  • anonymous
and we even know what the answer will be in the end :)
Mimi_x3
  • Mimi_x3
|dw:1316602830211:dw|
anonymous
  • anonymous
(15x + 7y) (15x-7y) (F) 15x * 15x = __ (O) 15x * -7y = __ (add this one...) (I) 7y * 15x =__ (...and this one together for your xy value.) (L) 7y * -7y =__ so, F (+/-) O+I (+/-) L
Mimi_x3
  • Mimi_x3
225x^2 - 49y^2 btw
anonymous
  • anonymous
|dw:1316603089681:dw|

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