Question

prove that 3 +2√5 is irrational​

Answer 1

Step-by-step explanation:

To prove: 3 + 2√5 is an irrational number. Proof: ... This shows (a-3b)/2b is a rational number. But we know that √5 is an irrational number.

Answer 2

Answer:

to prove that 3 + 2 root 5 is irrational number we will have to first prove that root 5 is an irrational number and anything or multiplied to an irrational number also give an irrational number which on adding up will also given an irrational number