Evaluate :

`( x^3 + x^2 - x -1 ) /( x + 1 )` is equal to

( 1 ) `( x^2 + 1 )`
( 2 ) ( x + 1 )
( 3 ) ( x -1 )
( 4 ) ( x - 1 ) ( x + 1 )

Find the value of ( 1 + 1/x ) ( 1 + 1/( x+1 )) ( 1 + 1/( x+2 ) ) ( 1 + 1/( x+3 )) is : (1) 1 + (1/(x + 4 )) ( 2 ) x +4 ( 3 ) 1/x ( 4 ) ( x+4 )/x

(1) / (x + 1)-(2) / (x ^ (4) -x + 1) <(1-2x) / (x ^ (3) +1)

If (x+1/x)=3 then x^2+1/x^2 is equal to

If (x+1/x)=2 then (x^3+1/x^3) is equal to: