happyday101 happyday101

22-03-2017
Mathematics

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What 2 numbers add up to get 17 and multiply to get -308??

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wolf1728 wolf1728

22-03-2017

A) x + y = 17
B) x * y = -308

B) y = -308 / x Substituting this into A)
A) x -308 / x = 17
A) x^2 -308 = 17x
A) x^2 -17x -308 = 0
x = 28
y = -11

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