Question

if x + 1/x = 5 then find x² + 1/x²​

Answer 1

Given :

( x + 1 /x ) = 5

We need to find x2 + 1 / x2

( x + 1 / x )2 = 25

= x2 + 1 / x2 + 2 (x)(1/x) = 25

= x2 + 1/x2 + 2 = 25

= x2 + 1 / x2 = 25 – 2

= x2 + 1 / x2=23

Hence x2 + 1 / x2 = 23

.

.

.

#KeepLearning...

Answer 2

Answer:

x+1/x=5

(x+1/x)²=5²

x²+2+1/x²=25

x²+1/x²=25-2

x²+1/x²=23

the answer is 23