Question

If x=√5-4 find the value of x+1/x ka whole square

Answer 1

Answer:

Given ,

X= √5-4

Hence ,1/X= 1/√5-4 = √5+4/(√5)²-(4)²

=√5+4/5-16= √5+4/-11

Hence, (X+1/X)²= (√5+4+√5+4/-11)².

= -11√5-44+√5+4/-11= -10√5-40/-11. = -(10√5+40)/-11= 10√5+40/11