Question

Please answer fast...
Give each and every process...​

Answer 1

Answer:

a + 1 / a = 5 OR -5

Step-by-step explanation:

Given, a² + (1 / a²) = 23

∵ [a + (1 / a) ]² = a² + (1 / a²) + 2

⇒ [a + (1 / a) ]² = 23 + 2

⇒ [a + (1 / a) ]² = 25

⇒ a + (1 / a) = 5 OR -5         [Taking square root of both sides]

Answer 2

Given:-

=>a²+1/a²=23

To find:-

=>Value of a+1/a

Solution:-

=>(a+1/a)²= a²+1/a²+2×a×1/a

=>(a+1/a)²=a²+1/a²+2

=>(a+1/a)²=23+2

=>(a+1/a)²=25

=>(a+1/a)=5

Thus,value of (a+1/a) is 5.