- #1
scott_bruenin
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Homework Statement
For each integer n, if n is odd then 8[tex]\left|[/tex] (n[tex]^{2}[/tex]-1)
Homework Equations
Def of an odd number 2q+1
The Attempt at a Solution
(2q+1)[tex]^{2}[/tex] -1
4q[tex]^{2}[/tex] +4q+1-1
4q[tex]^{2}[/tex] +4q
Here is where I get stuck... should I factor out the 4 and say that q[tex]^{2}[/tex] +q is an integer and therefore can be wrote as some integer r and therefore 8[tex]\left|[/tex] 4r?