Question

$3 +9 \sqrt[1 ]5 \\ {?}prove \: it \: is \: irrtional$
soon 25 points question​

Answer 1

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Answer 2

assume that 3+9√5 is rational then it is in form of a/b.

3+9√5=a/b

9√5=a-3b/b

a-3b/9b=√5

we assumed that 3+9√5 is rational but contradiction fact show that the answer is irrational.