hematical Question 5, 11.4.15 HW Score: 58.1%, 4.07 Part 1 of 8 points Points: 0 of 1 Use mathematical induction to prove the following. K 7 7 7n(n + 3) 1 . 2 . 3 2 . 3 . 4 3 . 4.5 n(n + 1)(n + 2) 4(n + 1)(n + 2) List Sn. S1. SK, and Sk + 1- 7 Sn 1 . 2 . 3 2 . 3 . 4 3 . 4-5 + ... + (Type your answers in factored form.)