2-√5solve it .is it rational number?
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No it is irrational no.
let us assume it is rational then
2-√5= p/q
2-p/q= √5
2q-p/q = √5
As p/q is rational so 2p-p/q is also rational but √5 is irrational so 2-√5 is also irrrational
let us assume it is rational then
2-√5= p/q
2-p/q= √5
2q-p/q = √5
As p/q is rational so 2p-p/q is also rational but √5 is irrational so 2-√5 is also irrrational
soumya396:
solve it plz
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