Question

Show that 7-root5 is irrational,given that root5 is irrational

Answer 1

hey mate here is your answer
√5 is an irrational because it can be written as 5^1/2 the power of 5 is not a non negative integer so, hence 7√5 is also an irrational number
hope it helps u

Answer 2

I hope my helping hands will help u my friend...