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-7

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Jalyn Gottlieb

Lvl 10
3y ago
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Wiki User

13y ago

use equations like this...

xy = 18

x + y = -25

solve for y in one of the equations and then substitute.

y = 18/x

x + (18/x) = -25

x2 + 18 = -25x

x2 + 25x + 18 = 0

use quadratic equation to find the answer...

x = -24.25727602 and -0.742023985

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Q: What times what is 18 that adds up to -25?
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