Question

proove that 7root5 is irrational

Answer 1

you will get it from internet

Answer 2

Q.) Prove that 7√5 is irrational?

Ans.)  Let us assume 7√5 as rational no.
         where a and b are integers 
         7√5=a/b
        √5=a/7b

    here a and b are integers so a/7b is rational and √5 is also rational.
    but the contradict fact that  √5 is irrational 
    so, our assumption of 7√5 is rational is in correct 
    so, we conclude 7√5 as irrational number.




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