elenabarr18
elenabarr18 elenabarr18
  • 03-11-2016
  • Mathematics
contestada

b^2-b-23=7
        +23=+23
b^2-b=30

Respuesta :

Ameliavga13 Ameliavga13
  • 04-11-2016
that looks about right.... is that your work or an answer?
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