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realchilljay
realchilljay realchilljay
  • 25-07-2016
  • Mathematics
Answered

what is the solution set of x^2+y^2=26 and x-y=6

Verified Answer :

Ckaranja
Ckaranja Ckaranja
  • 25-07-2016

\(x^{2} + y^{2} =26
 x-y=6
 x=y+6
Replacing in equation;
 (y+6[tex] )^{2}\)
+\(y^{2}\)=26
\(y^{2} +12x+36+ y^{2} =36\)
=\(2y^{2} +12x+36-26=0\)
=\(2y^{2} +12x+10=0\)
Product = 12
Sum= 10
factoring;
2\(y^{2}\)+2y+10y+10=0
2y(y+1)+10(y+1)=0
(2y+10)(y+1)=0
y=-1 or 2y=-10
y=-5
x=y+6
When y =-1
x=-1+6
x=5
when y =-5
x=-5+6
x=+1

Answer Link
Nümerik Nümerik
  • 25-07-2016

Solution is in the picure

Good luck :)

View image Nümerik
Answer Link

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