Question

if n is an odd integer, show that (n 2−1) is divisible by 8
cls 10 exp​

Answer 1

Answer:

4Q² + 4Q = 4(2)² + 4(2) =16 + 8 = 24, it is also divisible by 8 . It is concluded that 4Q² + 4Q is divisible by 8 for all natural numbers. Hence, n² -1 is divisible by 8 for all odd value of n

Answer 2

your answer in pic.....