If x= 9+4 (root 5) then find (root x) - 1/ (root x)
PLeaseee answer fasst! needed at the moment! :)
x=9+4√5
√x - 1/√x = (x-1)/√x
=> ( 9+4√5 - 1) / √(9 + 4√5 )
=>(8 + 4√5) / (4 + 5 + 4*5)
=> 4( 2 + √5) / √(22 + √52 + 2*2*√5)
=>4 ( 2 + √5) / √ (2 + √5)2
=>4(2+√5) / (2+ √5)
=> 4 (Ans)
thumbs up plz