anonymous
  • anonymous
i need help factoring c^2 - 6cd + 9d^2 -4 Can you please write it out so i can see how it is done
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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jhonyy9
  • jhonyy9
c^2 - 2*c*3d +(3d)^2 so after this help i think that will be easy
anonymous
  • anonymous
as difference of squares
anonymous
  • anonymous
can u draw it out so i can understand it beter

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jhonyy9
  • jhonyy9
yes but firstly you need to make what i have wrote after this we can using (-4) to ending this exercise
anonymous
  • anonymous
i dnt understand what u wrote out
jhonyy9
  • jhonyy9
so for you can understanding better look this please a*a - 2*a*b +b*b = ???
jhonyy9
  • jhonyy9
so firstly i like to make you learning this but if you wann i can solving it shortly
anonymous
  • anonymous
Can u draw it out so i can get a visual
jhonyy9
  • jhonyy9
how many is (a-b)^2 = ???
jhonyy9
  • jhonyy9
so equal a^2 -2ab +b^2 = a*a -2ab +b*b yes ?
anonymous
  • anonymous
yes i get that
jhonyy9
  • jhonyy9
can you make it coresponding with what i have wrote there firstly ?
anonymous
  • anonymous
no i dont get how to solve it thats why i am asking for someone to draw it on the board so i can get whats going on
jhonyy9
  • jhonyy9
(c-3d)^2 -4 =
jhonyy9
  • jhonyy9
this is clearly ?
jhonyy9
  • jhonyy9
and now you can using the formula a^2 -b^2 =(a-b)(a+b)
anonymous
  • anonymous
thats just it i dont know how to put it in the (a-b)(a+b) form
jhonyy9
  • jhonyy9
so from c^2 -6cd +9d^2 we have got (c-3d)^2 what will be in this last point a and 4=2*2 so hence 2^2 will be b^2 and now you just need to put these inside formula
jhonyy9
  • jhonyy9
ok ?
jhonyy9
  • jhonyy9
(c-3d)^2 will be a^2
jhonyy9
  • jhonyy9
than there we will get (c-3d)^2 -4=(c-3d-2)(c-3d+2)

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