Respostas

  • Usuário do Brainly
2014-07-10T12:24:20-03:00
13-2x-15.2=0 \\ 13-2x-30=0 \\ 13-30=2x \\ -17=2x \\ x= \frac{-17}{2}  \\\boxed{\boxed{ x=-8,5}}
2 4 2
Lucaskyun, queria na forma de delta