## prove that us an irrational ​

Question

prove that

us an irrational

in progress 0
2 months 2021-12-03T05:41:09+00:00 2 Answers 0 views 0

16807

Hope it helps……..

2. Prove that 3 + 2√7 is an irrational number.

Let us assume that 3 + 2√7 is a rational number.

• [ a & b are co – primes. ]

↪ Now, (a – 3b)/2b is a rational number. And √7 is an irrational number.

↪ So our assumption is wrong.

↪ This assumption has arisen because we assumed that 3 + 2√7 is a rational number.