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Casey Heaney
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∙ 3y agoThis answer is:
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∙ 12y agoxy = 4
x + y = -3
x = -3 - y = -(y+3)
-y2 + 3y - 4 = 0
which can be factored to
(4 - x)(x + 1) = 0. So x has two possible solutions: x = 4 or x = -1. If x = 4, then y = -1. If x = -1, then y = 4.
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