Question

#Please solve this question.​

Answer 1

Answer : d) 2

Let's see step by step how the answer comes.

Step by step explanation :

To find :

x³ + 1/x³ = ?

Solution :

Given that ,

x + 1/x = 2

On cubing both sides, we get :

[ x + 1/x ]³ = (2)³

x³ + 1 / x³ + 3 (x + 1 /x) = 8

x³ + 1/ x³ + 3 ( 2 ) = 8

x³ + 1/ x³ + 6 = 8

x³ + 1/ x³ = 8 - 6

x³ + 1/ x³ = 2

Thus, We got the answer.

Final answer :

Opt. [d] 2

[x³ + 1/ x³] is equal to 2.

Answer 2

$\mathfrak{\huge{Hi !}}$

Answer is in the attachment.

Answer : (d) 2

Thanks !