Find the maximum or minimum value of the quadratic expression
`2x-7-5x^(2)`

Find the maximum or minimum value of the quadratic expression 3x^(2)+2x+17

If a and b are the maximum and minimum values of the quadratic expressions 1-2x-5x^(2) and x^(2)-2x+5 respectively then the set of the all values of x for which the expression 5ax^(2)+bx+7 is positive

The maximum value of the quadratic expression 12x-x^(2)-32 is

Find the maximum value of the quadratic expression - 3x^(2) + 7x + 4

Find the maximum or minimum values of the following expressions i) 2x -7 – 5x^(2) ii) 3x^(2)+2x+11 iii) ax^(2)+bx+a, a,b in R, a != 0 iv) x^(2)-x+7

the minimum value of the quadratic expression x^2+2bx + c is

Find the maximum or minimum values of the following expressions on R 2x + 5 – 3x^(2)