val real = -1 * b / (2 * a)
val imag = d / (2 * a)

val root1
val root2
if (underR >= 0) {
  root1 = real + imag
  root2 = real - imag
} else {
  if (imag < 0) {
    root1 = real + " - " + (-1 * imag) + "i"
    root2 = real + " + " + (-1 * imag) + "i"
  } else {
    root1 = real + " + " + imag + "i"
    root2 = real + " - " + (-1 * imag) + "i"
  }
}