Answer:
B.

Explanation:
A quadratic equation is of the form
, where, a,b and c are any real numbers and
.
The quadratic formula is given as:

Here, the value of
can't be 0.
Now, the necessary condition to check if quadratic formula can be used in the given equations is to check the value of
after rearranging them in the standard form.
Let us check each expression for the value of
.
Option A:

Here,
. So, we can use quadratic formula.
Option B:

Here,
. So, we can't use quadratic formula.
Option C:

Here,
. So, we can use quadratic formula.
Option D:

Here,
. So, we can use quadratic formula.
So, only option B has
. So, we can't use quadratic formula for option B.