scale=2
define quadform ( a, b, c ) {
 root1 = (-b + sqrt(b^2 - 4*a*c)) / (2*a)
 root2 = (-b - sqrt(b^2 - 4*a*c)) / (2*a)
 print root1, "  ", root2, "\n"
}

quadform(1, 7, 12)
