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  • 24-03-2017
  • Mathematics
contestada

what equals -36 when added but equals 160 when multiplied.

Respuesta :

TheHero
TheHero TheHero
  • 24-03-2017
x + y = -36

x * y = 160

x = -36 - y

(-36-y) * y = 160

-36y - y^2 = 160

y^2 + 36y + 160 = 0

y = -5.19  and x = -30.8

or

y = -30.8 and x = -5.19

You can write them in this form too

x+ysqrt(z)


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