For the expression `ax^(2)+ 7x + 2` to be quadratic, the possible value of a are `"______"`.

For the expression ax^(2)+7x+2 to be quadratic,the possible values of a are

For the expression 7x^(2) + bx +4 to be quadratic , the possible values of b are "______" .

Factorise the expression f(x)=2x^(3)-7x^(2)-3x+18 , Hence, find all possible values of x for which f(x)=0.

The quadratic expression ax^(2)+bx+c>0 AA x in R ,then

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

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

If one of the roots of the quadratic equation x^(2) – 7x + k = 0 is 4, then find the value of k.

If one of the roots of the quadratic equation x^(2) – 7x + k = 0 is 4, then find the value of k.

Find the values of a, for which the quadratic expression ax^2 + (a - 2) x - 2 is negative for exactly two integral values of x .