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数学
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解方程组{x^2-xy=14① x-y=14②
人气：108 ℃ 时间：2020-09-30 07:31:02
解答
x^2-xy=14① x-y=14②
①÷②得
x = 14/14 = 1
y = x -14 = 1-14 = -13
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