prove that 3 + under root 5 is an irrational number
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Step-by-step explanation:
We know that sqrt.5=2.23606798...
3+sqrt.5=3+2.23606798...
=5.23606798...
which is irrational.
Another way to prove this is by accepting the fact that if you add or subtract a rational and an irrational number, the answer will always be irrational .
Hence proved.
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