The quadratic formula can be used to solve an equation only if the highest degree in the equation is .

А. 1
B. 3
C. 2
D. 0

C. 2

none of the above.

for one of the equations to be used in the process, there has to be a term in the equation since squared is .

since there is only a term in the first equation, we cannot derive a from completing the square.

solving with completing the square