anonymous
  • anonymous
Please help me in factoring this expression: 25a^2 - 9b^2 - c^2 + 6bc.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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King
  • King
(5a)^2-(3b-c)^2 =(5a+3b-c)(5a-3b+c)
anonymous
  • anonymous
How did you get 3(b - c)^2?
lalaly
  • lalaly
\[25a^2-(c^2-6bc+9b^2)\]\[25a^2-(c-3b)^2\]

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King
  • King
no its 3b-c
lalaly
  • lalaly
\[(5a+3b-c)(5a-3b+c)\]
anonymous
  • anonymous
Is it 3b - c or c - 3b?
King
  • King
yeah i gave the same thing...pratu use a-b whole square formula.....3b-c
lalaly
  • lalaly
he didnt factor out the minus sign like i did
King
  • King
i did
lalaly
  • lalaly
so it doesnt matter, both work
anonymous
  • anonymous
You both got the same answer.
King
  • King
why cant it be -(9b^2+c^2-6bc)?
lalaly
  • lalaly
its the same:S
anonymous
  • anonymous
Thanks lalaly and king.
King
  • King
kk!
lalaly
  • lalaly
i showed u how i got it, so hope it helps
King
  • King
yeah actually (a-b)^2 is same as (b-a)^2
anonymous
  • anonymous
It did help lalaly, thanks.
lalaly
  • lalaly
:) anytime
fj
  • fj
\[(5a)^{2}-(3b-c)^{2}\]

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