Question 8 - A-Level Maths

Exam Board	OCR MEI
Module	C2 (Core Mathematics 2)
Topic	Arithmetic Sequences and Series

Find \(\sum _ { k = 3 } ^ { 8 } \left( k ^ { 2 } - 1 \right)\).
State whether the sequence with \(k\) th term \(k ^ { 2 } - 1\) is convergent or divergent, giving a reason for your answer.