if n is an odd integer then show that n^2-1 is divisible by 8
Answers
Answered by
7
By putting n=3, 5,7, 9
we get
3^2-1=9-1=8
5^2-1=25-1=24
7^2-1=49-1=48
9^2-1=81-1=80.
All answers are divisible by 8.
we get
3^2-1=9-1=8
5^2-1=25-1=24
7^2-1=49-1=48
9^2-1=81-1=80.
All answers are divisible by 8.
batmansanthoshp9jgsm:
thanjs
thanks
Answered by
2
putting n=9
then
n^2-1
=9^2-1
=81-1
=80
so this is my answer
then
n^2-1
=9^2-1
=81-1
=80
so this is my answer
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