中３数学 𝑥−𝑦=5, 𝑥𝑦=2 のとき、𝑥+𝑦 の値を求める（２通りで） 明治大学附属八王子入試問題より
Problem Given x - y = 5 and xy = 2, find the value of x + y. Assume x 0 and y 0. (From the 2024 Meiji University Hachioji High School Entrance Examination)
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