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Gussie Gutkowski
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∙ 3y agoThis answer is:
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∙ 14y agoxy = -7; x + y = 4. x = 4 - y. (4 - y)y = -7. -y2 + 4y + 7 = 0. y = -1.3166, 5.3166. There are actually two solutions to this problem, then: (-1.3166, 5.3166) and (5.3166, -1.3166).
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