2-3multiply root5 is irrational no
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yes it is irrational number
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let us suppose that 2-3√5 is a rational number
2-3√5=0
-3√5=-2
√5=-2÷-3
√5=2÷3
we know that √5 is a irrational number
therefore, 2÷3 is also a irrational number (as 2÷3 =√5)
so,our assumption that 2-3√5 is a rational number is contradict.
therefore 2-3√5 is a irrational number
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