brunolupen1907 brunolupen1907
  • 18-02-2019
  • Mathematics
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x-y = 10 x^2-y^2 = 60 x^2+2xy+y^2=?

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Tucon
Tucon Tucon
  • 18-02-2019

 

[tex]\displaystyle\\x-y=\boxed{10}\\\\----------\\\\x^2-y^2 = 60\\\\(x-y)(x+y)=60\\\\10(x+y)=60\\\\x+y=\frac{60}{10}=\boxed{6}\\\\----------\\\\x^2+2xy+y^2=(x+y)^2=6^2=\boxed{\bf36}[/tex]

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