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If x+y=12,and xy =22,find x^2+y^2​

1 Answer

8 votes

Here,

x+y=12 and xy=22

we know that,


\tt{(x+y)^2=x^2+y^2+2xy }

according to the question,


\tt{ (12)^2=x^2+y^2+2×22 }


\tt{ x^2+y^2=144-44 }


\tt{x^2+y^2=100 }

User NathanBrakk
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