Question

(a): Prove by contradiction that 6 − 7√2 is irrational.​

Answer 1

Step-by-step explanation:

Let as assumed that 6-7√2 is rational

we can write it as a/b where a and b are co primes so

√2=-7a-42b/b

so as we know √2 is rational

Hence our assumption is wrong

6-7√2 is irrational