Find all the possible values of the following expressions: `1/(x^2+2)` (ii) `1/(x^2-2x+3)` (iii) `1/(x^2-x-1)`

Find all the possible the value of the following expression.sqrt(x^(2)-4)( ii) sqrt(9-x^(2))( (iii) sqrt(x^(2)-2x+10)

Find all possible values of the following expressions : (i) sqrt(x^(2)-4) (ii) sqrt(9-x^(2)) (iii) sqrt(x^(2)-2x+10)

Find all the possible values of f(x) =(1-x^2)/(x^2+3)

Find all possible values of expression sqrt(1-sqrt(x^(2)-6x+9)).

Find the value of the following expressions, when x=-1 (i) 2x-7( ii) -x+2 (iii) x^(2)+2x+1 (iv) 2x^(2)-x-2

Find the cube of each of the following binomial expressions: 2x+(3)/(x) (ii) 4-(1)/(3x)