Question

x plus one upon x is equal to 5 find the value of x square + 1 upon x square

Answer 1

25 because value of x+1\x is 5 given and it's square will be 25

Answer 2

x+1/x=5

squaring on both sides

(x+1/x)^2=25

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

x square + 1 upon x square=25-2=23