Question

by using suitable identities evaluate x2 +1/x2, if x +1 /x =5​

Answer 1

Answer:

5/2

Step-by-step explanation:

x+1/x = 5

x+1 = 5x

1 = 5x - x

4x = 1

x = 1/4

so put value of x in equation

2*1/4 + 1/2*1/4

1/2+ 1/1/2

1/2+2

1+4/2

5/2