Question

if (a - 1/a) = 2 , then (a^2 + 1/a^2) will be equal to ?​

Answer 1

Answer:

4

maybe helpful

mark as brainist

Answer 2

Answer:

2

Step-by-step explanation:

(a-1)/a = 2

Squaring both sides

(a-1)^2/a^2 =2^2

(a^2 +1 - 2a)/a^2 = 4

(a^2 + 1)/a^2 - 2a/a^2 = 4

(a^2 +1)/a^2 = 4 + 2/a

Now,

(a-1)/a =2

a-1 = 2a

a = - 1

(a^2 +1)/a^2 = 4+2/-1 = (- 4+2)/-1 = -2/-1 = 2