Question

Show that7- root 5 is irrational . Given that root 5 is irrational.

Answer 1

let 7-√5 is a rational number.

then,we know that sum of rational no and rational no is rational.

now,. (7-√5) -7=. -√5 ,(is rational).

but this contradicts the fact that √5 is irrational (given)
this contradiction arises because we let (7-√5) is rational.

hence (7-√5) is irrational.


Mark me as BRAINLIEST IF you satisfied by my ans.

Answer 2

Answer:

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