Question

if a = 9 _4 root5 find the value of a+1/a​

Answer 1

Answer:

Step-by-step explanation:a=9-4root5

9-4root5 +1/9-4root5

81+80-8root5+1/9-4root5

162-8root5/9-4root5

162-8root5)/9-4root5×9+4root5/9+4root5

1058-72root5+548root5/81-80

1058+476root5