# Can the quadratic formula be used to solve a linear equation?

Let us consider a quadratic equation a${x}^{2}$ + b$x$ + c=0
According to the quadratic formula,$x = \frac{- b \pm \sqrt{{b}^{2} - 4 a c}}{2 a}$
Now if you wish to use this formula to solve a linear equation, you will not get the term a ${x}^{2}$ and hence you will not be able to put the value of a in the formula.