1/(√2-1)=?	Choose the most appropriate option
A) 9+4√5
B) 9-4√5
C) √2+1
D) 9-2√5
E) 4+9√5
This question requires us to rationalize (fix) the denominator.   For more on this technique, seehttps://www.gmatprepnow.com/module/gmat ... video/1044   Given: 1/(√2-1)   Multiply top and bottom by the √2+1ONJUGATE of √2-1, which is √2+1   So, 1/(√2-1) = (1)(√2+1)/(√2-1)(√2+1)   = (√2+1)/(1)   = √2+1   =   √2+1
<result>C</result>
1/(√2-1)=?