prove that 2root5 is irrational
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Let 2√5 is a rational no.
Let 2√5=r
√5=r/2
√5 is an irrational no.
but r/2 is a rational no.
they cannot be equal.
so our supposition is wrong
so 2√5 is an irrational no.
Let 2√5=r
√5=r/2
√5 is an irrational no.
but r/2 is a rational no.
they cannot be equal.
so our supposition is wrong
so 2√5 is an irrational no.
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2
plz refer the attachment
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