Find roots of the quadratic equation in ruby.

# Roots of quadratic equation

class QuadraticEquationRoots
def initialize
puts "Equation will be in the format : ax^2 + bx + c"
puts "Enter the value of a :"
a = gets.strip.to_i
puts "Enter the value of b :"
b = gets.strip.to_i
puts "Enter the value of c :"
c = gets.strip.to_i
roots_of_quadratic_equations(a, b, c)
end

def roots_of_quadratic_equations(a, b, c)
d = ((b*b) - (4*a*c))
root_d = Math.sqrt(d.abs).round(2)
if d > 0
puts "Roots are real and different"
x1 = (-b + root_d)/ 2*a
x2 = (-b - root_d)/ 2*a
puts "Roots are #{x1.round(2)} and #{x2.round(2)}"
elsif d == 0
puts "Roots are real and same"
x1 = -b / 2*a
puts "Roots are #{x1}"
else
puts "Roots are imaginary"
puts "Roots are #{-b/2*a}+#{root_d/2*a}i, #{-b/2*a}#{-root_d/2*a}i"
end
end
end

roots = QuadraticEquationRoots.new