Question

please answer this question

Answer 1

heya !!!

here is your answer!!!

hope it helps you dear!!!

thanks !!!

Answer 2

HELLO DEAR,

a = 7 - 4√3

=> 1/a = 1/(7 - 4√3) ×(7 + 4√3)/(7 + 4√3)

=> (7 + 4√3)/( 49 - 48)

=> 1/a = 7 + 4√3

now,

(√a + 1/√a)² = a + 1/a + 2√a × 1/√a

=> 7 - 4√3 + 7 + 4√3 + 2

=> 14 + 2

=> (√a + 1/√a)² = 4²

=> √a + 1/√a = +-2

I HOPE ITS HELP YOU DEAR,
THANKS