"Find all possible values of 'a'for which the expression "(ax^(2)-7x+5)/(5x^(2)-7x+a)" may be capable of all values,"

Find all possible values of 'a' for which the expression (x^(2)-7x+5)/(5x^(2)-7x+a) may be capable of all values,x being any real quantity

Find all the possible values of the expression: 1/(x^2+2)

Find all the possible values of the expression: 1/(x^2+2)

Find all the possible values of the expression sqrt(x^2-4) .

Find all the possible values of the expression sqrt(x^2-4) .

Find all possible values of the following expressions : sqrt(x^(2)-9)

Number of integral values of 'a for which the expression (x^(2)-ax+11)/(x^(2)-5x+4) can assume all real values is

Find the values of a for which the expression (ax^2+3x-4)/(3x-4x^2+a) assumes all real values for all real values of x

Find all values of x for which |2x+3| ge 5.

Find all the possible values of expression : ( |x|)/(x) + (|y|)/y