Which of the following is a situation in which an equation cannot be solved using the quadratic formula?
A.The right-hand side of the equation is zero.
B.The coefficient of the x2-term is 1.
C.One term of the polynomial has a degree of 3.
D.The coefficient of the x-term is zero.
The quadratic formula is used to calculate the roots of equations with degree 2, ie. in the form y = ax² + bx + c, where a,b,c ∈ R (real numbers). So, the answer is C.
