Question

plz solve it ... It is urgent

Answer 1

a^2 + 1/a^2 = 23

On adding 2 in both sides, we get

a^2 + 1/a^2 + 2 = 23 + 2

=> a^2 + 1/a^2 + 2(a)( 1/a) = 25

=> ( a + 1/a)^2 = 25

=> a + 1/a = 5

Answer 2

a^2 + 1/a^2 = 23

On adding 2 in both sides, we get

a^2 + 1/a^2 + 2 = 23 + 2

=> a^2 + 1/a^2 + 2(a)( 1/a) = 25

=> ( a + 1/a)^2 = 25

=> a + 1/a = 5