samiarana927 samiarana927
  • 11-06-2018
  • Mathematics
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If x+y=10 and x-y=4,find the value of x*x-y*y

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caylus
caylus caylus
  • 11-06-2018
Hi,
[tex]x^2-y^2=(x+y)*(x-y)=10*4=40[/tex]
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