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Danika Abbott
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∙ 3y agoThis answer is:
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∙ 14y agox + y = 13
xy = -90
y = 13-x
xy = x (13-x) = -90
13x -x^2 = -90
x^2-13x-90 = 0
(x-18)(x+5) = 0
x = 18 y = -5
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