# Please confirm if I did the follow problems correctly:

A) Find the sum or difference.

(5a – 3b) + (2a + 6b)= 7a + 9b

Answer: = 7a + 9b

B) Let’s work a few of these (FOIL)

1) (x+2) (x+8) = x 10

Answer: x10

2.) (x+5) (x-7) = x + 11

Answer: x + 11

3.) (2x+4) (2x-3) = 4x + 7

Answer: 4x + 7