Proof /5 is irrational.

1.	Proof /5 is irrational.
Answer» Let us assume to the contary that √5 is a rational no. So , √5 =p/q where pand q are co primes and q not equal to zeroSquaring both the sides 5 = p^2 /q^2 5q^2 = p^2This means that 5q^2 is factors p and p^2 (5a)^2=5 q^25a^2= q^2 This means that 5a^2 is factor of q^2 This quantradicts that √5 is rational no. And p and q are co primes

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