Prove that 2 root 5 - 5 root 2 is irrational
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=> 2√5 - 5√2
= √20 - √50
= √10 ( √2 - √5)
= √2. √5 ( √2 -√5)
here
√2 - √5 is irrational
so also
2√5 - 5√2 is irrational
hope it can help you ., ,,,✌✌✌
= √20 - √50
= √10 ( √2 - √5)
= √2. √5 ( √2 -√5)
here
√2 - √5 is irrational
so also
2√5 - 5√2 is irrational
hope it can help you ., ,,,✌✌✌
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