Respuesta :

gmany

Answer:

[tex]\huge\boxed{-9r^2-2r+r^2+r=-8r^2-r}[/tex]

Step-by-step explanation:

[tex]-9r^2-2r+r^2+r[/tex]

combine like terms

[tex](-9r^2+r^2)+(-2r+r)=-8r^2-r[/tex]

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