Respuesta :

Answer:

6y^2 + 12y - 21

Explanation:

combine like terms

miraculouslbcomics

Answer:

=6y^2+12y−21

Explanation:

1y2+3y−6+4y−7+2y2+3y2−8+5y

=(y2+2y2+3y2)+(3y+4y+5y)+(−6+−7+−8) combine like terms

=6y^2+12y+−21

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