Prove that 5 + √3 is irrational.
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so ,multiply by conjugate but squreroot is remaining so this number irrational
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Let us assume the given number be rational and we will write the given number in p/q form
⇒5- √3= p/q
⇒√3= 5q- p
q
We observe that LHS is irrational and RHS is rational, which is not possible.
This is contradiction.
Hence our assumption that given number is rational is false
⇒5− √3 is irrational
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