Question

solve both 1 n 2 ....thankxxx

Answer 1

Given a = 2 + √3
= (1/a) = 1 / (2 + √3)
Multiply and divide by (2 − √3)
= (1/a) = (2 − √3) / [(2 + √3)(2 − √3)]
= (1/a) = (2 − √3) / [4 − 3]
=(1/a) = (2 − √3)
∴ a + (1/a) = (2 + √3) + (2 − √3)
= 4

I hope this will help you

Answer 2

hope it helps..............