gpetrocci24 gpetrocci24
  • 16-02-2021
  • Mathematics
contestada

(9r^2+4r-7)+(3r^2-3r)

Respuesta :

deondra12
deondra12 deondra12
  • 16-02-2021

Answer:

12r2+r−7

Step-by-step explanation:

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