f x be real, prove that the value of`(2x^2-2x+4)/(x^2-4x+3)` cannot lie between -7 and 1

If x be real , show that the value of (2x^2-2x+4)/(x^2-4x+3) cannot lie between (-7) and 1.

if x be real, show that the value of (2x^2-2x+4)/(x^2-4x+3) cannot lie between(-7) and 1.

If x be real, prove that the value of (11x^(2)+12x+6)/(x^(2)+4x+2) cannot lie between -5 and 3.

Show that for all real values of x the value of (x^2-3x+4)/(x^2+3x+4) always lie between 1/7 and 7.

If x is real, show that the value of x/(x^2-5x+9) always lie between 1 and (-1/11)

If x is real then the value of (x^(2)-2x+1)/(x+1) will not lie between.-

If x is real, prove that the value of the expression ((x-1)(x+3))/((x-2)(x+4)) cannot be between (4)/(9) and 1.

If x is real, prove that the value of the expression ((x-1)(x+3))/((x-2)(x+4) cannot be between 4/9 and 1.

For real x, the greatest value of (x^2+2x+4)/(2x^2+4x+9) is