musicailostephiaDe
musicailostephiaDe
11-07-2016
Mathematics
contestada
Simplify (3n - 2m)2 = ?
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dalendrk
dalendrk
13-07-2016
[tex](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}[/tex]
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