Question

b) Prove that 2V 3-V 5 is an irrational number,​

Answer 1

Answer:

2√3 - √5

we know √3 is irrational number

2√3 is irrational

we know √5 is irrational

so difference of two irrational nos with different base is always irrational

so 2√3 - √ 5 is irrational. proved