Prove that 3+2√5 is irrational

1.	Prove that 3+2√5 is irrational
Answer» Let us assume ,to the contrary that 3+2√5 is rational.That is , we can find coprimr a&b (b not equal to 0)such that 3+2√5=a/b 2√5=a/b 2√5=a/b - 3/1 2√5=a-3b/b Ir not equal to R3+2√5= Irrational .

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