Math ax^2+bx+c=y solver

local tArgs = {...}
function signFix(eq)
if eq == math.abs(eq) then
    return "+"..eq
else
    return eq
end
end

tArgs[2] = tArgs[2]/tArgs[1]
tArgs[3] = tArgs[3]/tArgs[1]
tArgs[4] = tArgs[4]/tArgs[1]
print("x^2 "..signFix(tArgs[2]).."x "..signFix(tArgs[3]).." = "..tArgs[4])
print("x^2 "..signFix(tArgs[2]).."x "..signFix(((tArgs[2]/2)^2)).." = "..((tArgs[4]-tArgs[3])+((tArgs[2]/2))^2))
print("(x "..signFix((tArgs[2]/2))..")^2 = "..((tArgs[4]-tArgs[3])+((tArgs[2]/2))^2))
print("x "..signFix((tArgs[2]/2)).." = "..((tArgs[4]-tArgs[3])+((tArgs[2]/2))^2)^0.5)
print("x = "..(0-(tArgs[2]/2)+((tArgs[4]-tArgs[3])+((tArgs[2]/2))^2)^0.5).." or "..(0-(tArgs[2]/2)-((tArgs[4]-tArgs[3])+((tArgs[2]/2))^2)^0.5))