Question

13. If a =
1/3-√11and b = 1/a
, then find a2 – b
2​

Answer 1

Answer:

a =√11/3b = 1/a

= 1/(√11/3)

= 3/√11a2 - b2

= (√11/3)2 -(3/√11)2

={(√11)2/(3)2} - {(3)2/(√11)2}

= (11/9) - (9/11)

= (121-81)/99

= 40/99