Possible Duplicate:
How can you prove that the square root of two is irrational?
Can $a^2 = 2b^2$ have a solution where $a, b$ are in $\mathbb{Z}$ but not zero?
$\mathbb{Z}$ = positive and negative whole numbers
Possible Duplicate:
How can you prove that the square root of two is irrational?
Can $a^2 = 2b^2$ have a solution where $a, b$ are in $\mathbb{Z}$ but not zero?
$\mathbb{Z}$ = positive and negative whole numbers