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  • 27-02-2016
  • Mathematics
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how to do x squared -2x plus y squared = 80

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  • 27-02-2016
you need to think of 2 square numbers that add up to make 80
answer:
64+16
this means x =8 and y= 4
because of the square roots
or
y=4
&
 x=8
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