qcesticn qcesticn

17-03-2017
Mathematics

contestada

what two numbers added together get -20 but when multiplied gets 20?

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TheHero TheHero

24-03-2017

x + y = -20

xy = 20

x = -20 -y

-20y - y^2 = 20

y^2 + 20y + 20 = 0

y = -1.056 and x = -18.94

or vice versa

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