Respuesta :

jeremiahkevinm

Answer:

1. (3+2) (n+3)

= 5 (n+3)

=15n+3.

2. (n-1)(2-2)

= (n-1)0

=0

3. (2x + 3)(2x - 3)

= 4x^2 +6x -6x -9

=4x^2 -9

4. (r+1) (-3)

= -3r -3