prove that 3+2√5
is an irrational
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Step-by-step explanation:
let assume that 3+2√5 is rational
3+2√5=a/b
2√5=a/b-3
2√5=a-3b/b
√5=a-3b/2b
therefore our assumption is wrong.
an irrational not equal to rational
therefore 3+2√5 is irrational
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