Question

PLEASE HELP WILL GIVE BRAINLIEST FOR ANSWER AND WORK

Answer 1

P1 = 1(1 + 1) = 2
pk = k(k + 1) 
P_k+1 = (k + 1)(k + 1 + 1)
P_k+1 = (k + 1)(k + 2) I'm guessing at this: the notation is not the usual notation.