Question

Prove that 3+2√5 is irrational​

Answer 1

Answer:

Let it 3 root 2 /5 be a rational no.

then 3 root 2/5=p/Q

3 root 2=5p/Q

root 2=5p/3q

LHS is an irrational no.

LHS NOT=RHS

this contradiction is due to our wrong assumption that 3 root 2/5is a rational no.

therefore 3 root 2/5is an irrational no

Answer 2

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