Question

if X=4 + 4√5,find x+1/x​

Answer 1

Answer:

✏given here

X = 4+√5........(1)

✒Find here

♠ x + 1/x = ❓

Now,

X = 4+√5

=> 1/x = 1/(4+√5)

[ Rationalize denominators ]

1/X = (4-√5 )/(4+√5)(4-√5)

1/x = (4-√5)/(16-5)

= (4-√5)/9

So,

✏ X + 1/x = (4+√5) + (4-√5)/9

= (36+9√5+4-√5)/9

= (40+8√5)/9

✏Hopes its help's u .

Answer 2

Answer:

65(1+√5)/16

Step-by-step explanation:

rationalise the denominator

and then solve