Question 828420
what two numbers multiply to equal -3136 and add up to equal 15?
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Equations:
xy = -3136
x + y = 15
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Substitute for "x" and solve for "y":
(15-y)y = -3136
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y^2 - 15y - 3136 = 0
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(y-64)(y+79) = 0
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If y = 64, x = -79
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Ans: y = 79, x = -64