Prove that (2√3+ √5) is an irrational number. Also check whether (2√3+√5)(2+√3 – √5) is rational or irrational.

Prove that (2√3+ √5) is an irrational number. Also check whether

1.	Prove that (2√3+ √5) is an irrational number. Also check whether (2√3+√5)(2+√3 – √5) is rational or irrational.
Answer» ONG>ANSWER: I don't KNOW the answer .SORRY

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Prove that (2√3+ √5) is an irrational number. Also check whether (2√3+√5)(2+√3 – √5) is rational or irrational.​

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Prove that (2√3+ √5) is an irrational number. Also check whether (2√3+√5)(2+√3 – √5) is rational or irrational.