N square + n is always even (for all integers) prove it
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let N=1
(1)^2+1=2;
let N=2
(2)^2+2=6;
hence (N)^2+n is always even.... proved
(1)^2+1=2;
let N=2
(2)^2+2=6;
hence (N)^2+n is always even.... proved
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