If x be real , find the greatest value of `(x+2)/(2x^2+3x+6)` .

Find the greatest value of 3+5x-2x^(2) .

If x be real, find the maximum value of ((x+2))/(2x^(2)+3x+6) .

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

Find the greatest and least value of (x+2)/(2x^(2)+3x+6)

IF x is real , find the greatest and the least value of : (x^2-2x+2)/(x^2+3x+9)

IF x is real , find the greatest and the least value of : (x^2+14x+9)/(x^2+2x+3)

IF x is real, find the greatest and the least value of (6x^2-22x-21)/(5x^2-18x+17) , also find the corresponding values of x.

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