Question

Prove that 9-2√3 is an irrational Number

Answer 1

first assume that 9-2root3 is rational
then subtract 9-2root3 from 9
then multiply 2root3 by 1/2
then acordingly use will get root3 as rational since differnce and product of rational is always rational
so his will contradicts the fact that root3 is irrational
therefore the assumption is wrong
therefore9-2root3 is irrational

Answer 2

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