In This Video We Proof that root two 2 is a irrational number.
for proofing root 2 is irrational we have to proof
Theorem 1.3 : Let p be a prime number. If p divides a2, then p divides a, where a is a positive integer.
now with the help of this theorem we can proof root 2 is irrational.
we don't know root 2 is irrational or rational but we know any number on real number line can only be one of them rational or irrational.
so let we assumed root is rational
and proof it wrong then root 2 automatically became irrational.
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