prove that 2 +root5 is irrational ncert
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Answer:
Step-by-step explanation:
Let us assume that 2+root5 is rational
SO,
2+root5 = a/b
Root5 = a/b-2 =a-2b/b
But we know that root5 is irrational
So,
Our assumption was wrong
Therefore, 2+root5 is irrational
Hence proved
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