If a=2+route3 then find the value of a-1/a

1.	If a=2+route3 then find the value of a-1/a
Answer» If a=2+√3Thena-1/a=(2+√3)-1/(2+√3)=(2+√3)^2-1/2+√3=6+4√3/2+√3Now By rationalysation methode= -12+2√3

Discussion