prove that 3+2under root 5 is irrational
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Let 3 + 2 root 5 is rational
therefore 3 + 2 root 5=a/b
root 5=a-3/2b
because a-3/2b is rational
therefore root 5 will also be rational
but we know that,
root 5 is irrational
that is our supposition is wrong
that is 3+2 root 5 is irrational.
therefore 3 + 2 root 5=a/b
root 5=a-3/2b
because a-3/2b is rational
therefore root 5 will also be rational
but we know that,
root 5 is irrational
that is our supposition is wrong
that is 3+2 root 5 is irrational.
Answered by
1
It is a irrational number.
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