Question

(17) Prove that: √2 is irrational. ​

Answer 1

Answer:

given √2 is irrational √2 can't wright in p/q form

Answer 2

Answer:

let √2 be rational number

√2=b/a

√2a=b

squaring both sides

2a=b²

if b² is rational number then

LHS=RHS

but we know that √2 is irrational

so we can say that the assumption is contradictes the fact

therefore, √2 is irrational