Respostas

2014-07-13T23:33:34-03:00
Os números são 3 e 8. 3x8=24 e 3+8=11
  • Usuário do Brainly
2014-07-13T23:33:50-03:00
 \left \{ {{xy=24} \atop {x+y=11}} \right.

isolar  x=11-y

subs/
xy=24

y(11-y)=24

11y-y²=24

-y²+11y-24=0

y²-11y+24=0

Δ=b²-4ac
Δ=121-96

Δ=25
√Δ=5

y'= \frac{11+5}{2} = \frac{16}{2} =8

y"= \frac{11-5}{2} = \frac{6}{2} =3

como  x=11-y
           x'=11-8=3
           x"=11-3=8

R= Somos 3 e 8