if n is any positive odd integer then show that n square minus 1 is divisible by 8
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Answered by
1
u can take an example like..
let n=3,
sq.of 3=9
9-1=8
and 8 is divisible by 8
OR
let n=5
sq. of 5=25
25-1=24
24÷8=3
so 24 is also divisible by 8
let n=3,
sq.of 3=9
9-1=8
and 8 is divisible by 8
OR
let n=5
sq. of 5=25
25-1=24
24÷8=3
so 24 is also divisible by 8
deeya932:
but these are numbers so how we can prove that n square minus 1 is divisible by 8
3 and 8 are positive integers
thanks
Nn
Answered by
1
let n be any odd integer ex.9
n=9
(n)2=81
(n)2-1=80
80is divisible by 8
n=9
(n)2=81
(n)2-1=80
80is divisible by 8
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