Question

solve this question i am having a doubt

Answer 1

Answer:

HOPE this helps

Step-by-step explanation:

answer in pic

Answer 2

Answer:

We will use Identity: (x+1/x)²= (x)² + (1/x)² + 2*x*1/x

Step-by-step explanation:

=> (x+1/x)²= (x)² + (1/x)² + 2*x*1/x

=> (x+1/x)²= x² + (1/x)² + 2       {as x and x get cancelled}

As x+1/x= 10 (given):

=> (10)²= x² + (1/x)² + 2

=> 100= x² + (1/x)² + 2

=> 100-2= x² + (1/x)²

=> 98= x² + (1/x)²

∴x² + (1/x)²= 98

Hope it helps you!