# What is the value of the discriminant for the quadratic equation 4x^2-2x+1=0?

The formula for a discriminant is ${b}^{2} - 4 a c$. Quadratic equations are usually written in the form $a {x}^{2} + b x + c$. In this case, $a = 4 , b = - 2 , \mathmr{and} c = 1$. Substituting the values in the formula is:
${\left(- 2\right)}^{2} - 4 \left(4\right) \left(1\right) = 4 - 16 = - 12$.