Question

1 1 Q. 11. If x + 1/x =5, find the value of x²+1/x²​

Answer 1

Answer:

( x + 1 /x ) = 5

( x + 1 / x )^2 = 25

= x^2 + 1 / x^2 + 2 * x * 1/x =25

= x ^2 + 1/x^2 + 2 = 25

= X^2 + 1 / x^2 = 25 - 2 = 23 Ans .

Step-by-step explanation:

Answer 2

Answer:

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

Step-by-step explanation:

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