Question

If x = 4-root 5 find the value of x+1/x

Answer 1

Answer:

48 - 10 root5 / 11

Step-by-step explanation:

x= 4 -root 5

1/x = 1/ 4 - root 5

Rationalisation of denominator

1/x= 1/4 -root 5 × 4 +root 5/4 +root5

1/x = 4 +root5 / 11

x+1/x= 4 -root5 + 4 +root 5/ 11

x + 1/x = 48 - 10root 5/11

HOPE THIS WILL HELP

Answer 2

Step-by-step explanation:

hope it is useful for you

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