prove that 2-3√5 is an irrational
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prove that 2-3√5 is an irrational
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is irrational.
Let us assume that 2-3 root 5 it rational....
then it can be written in the form
where p and q are integers and q not equal to zero.
therefore,
This contradicts the fact that
is irrational and therfore our assumption is wrong...
Thus 2 - 3root 5 is irrational...
Hope this would help you...