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musicailostephiaDe
musicailostephiaDe musicailostephiaDe
  • 11-07-2016
  • Mathematics
Answered

Simplify (3n - 2m)2 = ?

Verified Answer :

dalendrk
dalendrk dalendrk
  • 12-07-2016

\((3n-2m)^2\\\\use\ (a-b)^2=a^2-2ab+b^2\\\\(3n-2m)^2=(3n)^2-2\cdot3n\cdot2m+(2m)^2\\\\=\boxed{9n^2-12mn+4m^2}\)

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