Question

if a =3-2√2, find the value of a square -1/a square​

Answer 1

Given:- a = 3 - 2√2,

now, -1/a = - 1 / 3 - 2√2

= - 1 / 3 - 2√2 × 3 + 2√2 / 3 + 2√2

= - 1(3 - 2√2) / (3)^2 - (2√2)^2

= - 3 + 2√2 / 9 - 8

= - 3 + 2√2

hence -1/a = -3 + 2√2

here is your answer

hope it will help you