VERSION 5.00
Begin VB.Form Form1 
   Caption         =   "Form1"
   ClientHeight    =   3795
   ClientLeft      =   60
   ClientTop       =   450
   ClientWidth     =   6180
   LinkTopic       =   "Form1"
   ScaleHeight     =   3795
   ScaleWidth      =   6180
   StartUpPosition =   3  '系統預設值
   Begin VB.CommandButton Command2 
      Caption         =   "清除"
      Height          =   615
      Left            =   4560
      TabIndex        =   12
      Top             =   2040
      Width           =   1335
   End
   Begin VB.CommandButton Command1 
      Caption         =   "計算"
      Height          =   615
      Left            =   4560
      TabIndex        =   11
      Top             =   1200
      Width           =   1335
   End
   Begin VB.TextBox Text3 
      BeginProperty Font 
         Name            =   "微軟正黑體"
         Size            =   12
         Charset         =   136
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   615
      Left            =   720
      TabIndex        =   6
      Top             =   2640
      Width           =   975
   End
   Begin VB.TextBox Text2 
      BeginProperty Font 
         Name            =   "微軟正黑體"
         Size            =   12
         Charset         =   136
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   615
      Left            =   720
      TabIndex        =   5
      Top             =   1920
      Width           =   975
   End
   Begin VB.TextBox Text1 
      BeginProperty Font 
         Name            =   "微軟正黑體"
         Size            =   12
         Charset         =   136
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   615
      Left            =   720
      TabIndex        =   4
      Top             =   1200
      Width           =   975
   End
   Begin VB.Label Label8 
      Appearance      =   0  '平面
      BackColor       =   &H80000005&
      BorderStyle     =   1  '單線固定
      BeginProperty Font 
         Name            =   "微軟正黑體"
         Size            =   14.25
         Charset         =   136
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      ForeColor       =   &H80000008&
      Height          =   615
      Left            =   3120
      TabIndex        =   10
      Top             =   2040
      Width           =   1215
   End
   Begin VB.Label Label7 
      Appearance      =   0  '平面
      BackColor       =   &H80000005&
      BorderStyle     =   1  '單線固定
      BeginProperty Font 
         Name            =   "微軟正黑體"
         Size            =   14.25
         Charset         =   136
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      ForeColor       =   &H80000008&
      Height          =   615
      Left            =   3120
      TabIndex        =   9
      Top             =   1200
      Width           =   1215
   End
   Begin VB.Label Label6 
      Caption         =   "X2="
      BeginProperty Font 
         Name            =   "微軟正黑體"
         Size            =   14.25
         Charset         =   136
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   615
      Left            =   2280
      TabIndex        =   8
      Top             =   2040
      Width           =   855
   End
   Begin VB.Label Label5 
      Caption         =   "X1="
      BeginProperty Font 
         Name            =   "微軟正黑體"
         Size            =   14.25
         Charset         =   136
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   615
      Left            =   2280
      TabIndex        =   7
      Top             =   1200
      Width           =   855
   End
   Begin VB.Label Label4 
      Caption         =   "c="
      BeginProperty Font 
         Name            =   "微軟正黑體"
         Size            =   18
         Charset         =   136
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   615
      Left            =   120
      TabIndex        =   3
      Top             =   2640
      Width           =   495
   End
   Begin VB.Label Label3 
      Caption         =   "b="
      BeginProperty Font 
         Name            =   "微軟正黑體"
         Size            =   18
         Charset         =   136
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   615
      Left            =   120
      TabIndex        =   2
      Top             =   1920
      Width           =   615
   End
   Begin VB.Label Label2 
      Caption         =   "a="
      BeginProperty Font 
         Name            =   "微軟正黑體"
         Size            =   18
         Charset         =   136
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   615
      Left            =   120
      TabIndex        =   1
      Top             =   1200
      Width           =   615
   End
   Begin VB.Label Label1 
      Caption         =   "ax^2+bx+c=0"
      BeginProperty Font 
         Name            =   "微軟正黑體"
         Size            =   18
         Charset         =   136
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   735
      Left            =   120
      TabIndex        =   0
      Top             =   240
      Width           =   2535
   End
End
Attribute VB_Name = "Form1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Private Sub Command1_Click()
    a = Val(Text1.Text)
    b = Val(Text2.Text)
    c = Val(Text3.Text)
    d = b ^ 2 + 4 * a * c
    
    If d = 0 Or d < 0 Then
        If d < 0 Then
            X1 = "無解"
            X2 = "無解"
        Else
            X1 = -b / (2 * a)
            X2 = "重根"
        End If
    Else
        X1 = (-b + Sqr(d)) / (2 * a)
        X2 = (-b - Sqr(d)) / (2 * a)
        X1 = Round(X1, 2)
        X2 = Round(X2, 2)
    End If
    
    Label7.Caption = X1
    Label8.Caption = X2
    
End Sub

Private Sub Command2_Click()
    Text1.Text = ""
    Text2.Text = ""
    Text3.Text = ""
    Label7.Caption = ""
    Label8.Caption = ""
End Sub