Question

If x= 9 4 (root 5) then find (root x) - 1/ (root x) pleaseee answer fasst! needed at the moment! :)

Answer 1

x=9+4√5
=4+5+2.2.√5
=(2)²+2.2.√5+(√5)²
=(2+√5)²
∴, √x=2+√5  (neglecting the negative sign)
1/√x=1/2+√5
=(2-√5)/(2+√5)(2-√5)
=(2-√5)/{(2)²-(√5)²}
=(2-√5)/(4-5)
=(2-√5)/(-1)
=√5-2
√x-1/√x
=2+√5-(√5-2)
=2+√5-√5+2
=4 Ans.

Answer 2

Answer:

Here is appropriate answer of your question