Perform FOIL (Firt - Outer - Inner - Last)
AA = A (Anything ANDed with itself is itself)
Find a like term (A) and pull it out. (There is an A in A, AC, and AB). Make sure you leave the BC alone at the end.
Anything ORed with a 1 is a 1 (1+C+B=1).
Anthing ANDed with a 1 is itself (A1=A)