Given that $x+y = 10$ and $2x+y = 13$, evaluate $x^2-y^2$.
Question:
Given that $x+y = 10$ and $2x+y = 13$, evaluate $x^2-y^2$.
Answer:
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Given that $x+y = 10$ and $2x+y = 13$, evaluate $x^2-y^2$.
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