Question

prove that 3 + 2 √ 5 is irrational​

Answer 1

Answer:

see the answer in image

Answer 2

Answer:

$we \: cannot \: cancel \: 2 \sqrt{5} \\ in \: this \: equation \:$

$3 + 2 \sqrt{5}$

$so \: it \: is \: a \: irrational \: number$

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