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{x2+y2=13x−y=1\left\{ \begin{array} { l } x ^ { 2 } + y ^ { 2 } = 13 \\x - y = 1\end{array} \right.

question 127

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{x2+y2=13x−y=1\left\{ \begin{array} { l } x ^ { 2 } + y ^ { 2 } = 13 \\x - y = 1\end{array} \right.

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