Question

SOLVE PLEASE MATH question​

Answer 1

Below.

Explanation:

x = 5 - 2√6

(i) 1/ x = 1 / 5 - 2√6 Multiply top and bottom by (5 + 2√6)

= (5 + 2√6) / (5 - 2√6)(5 + 2√6)

= (5 +2√6)(25 - 24)

= (5 + 2√6).

(ii) x - 1/x = 5 - 2√6 - (5 + 2√6

= - 4√6.

(iii) x + 1/x = 5 - 2√6 + (5 + 2√6)

= 10.