(In reply to Last two digits
by Nick Hobson)
"By the remainder theorem (also known as the factor theorem), non-zero (a + b) divides (a^n + b^n)."
But if I take a=3, b=1, and n=2, a^n+b^n=10, while a+b=4 and 4 does not divide 10. It is true that a-b divides a^n-b^n.
Posted by Richard
on 2004-01-30 22:09:15