# How do you compute the discriminant of 4x^2-16x=-16?

$4 {x}^{2} - 16 x + 16 = 0$
$D = {b}^{2} - 4 a c = {16}^{2} - 4 \left(4\right) \left(16\right) = 256 - 256 = 0$