Polynomial Equation Solver

<Window x:Class="MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="Polynomial Equation Solver" Height="436" Width="559" Background="WhiteSmoke"  >
    <StackPanel>
        <TextBlock Margin="10" TextAlignment="Center" >The coefficients below are on the form Ax^4 + Bx^3 + Cx^2 + Dx + E = 0</TextBlock>
        <WrapPanel>
            <TextBlock  Width="100" TextAlignment="Right" >a=</TextBlock>
        <TextBox Name="txtA" Width="100"></TextBox>
        </WrapPanel>
        <WrapPanel>
            <TextBlock  Width="100" TextAlignment="Right" >b=</TextBlock>
            <TextBox  Width="100" Name="txtB"></TextBox>
        </WrapPanel>
        <WrapPanel>
            <TextBlock  Width="100" TextAlignment="Right" >c=</TextBlock>
            <TextBox  Width="100" Name="txtC"></TextBox>
        </WrapPanel>
        <WrapPanel>
            <TextBlock  Width="100" TextAlignment="Right" >d=</TextBlock>
            <TextBox  Width="100" Name="txtD"></TextBox>
        </WrapPanel>
        <WrapPanel>
            <TextBlock  Width="100" TextAlignment="Right" >e=</TextBlock>
            <TextBox Width="100" Name="txtE"></TextBox>
        </WrapPanel>
        <Button Name="btnClear" Margin="5">Clear</Button>
        <WrapPanel Margin="10">
            <TextBlock>Description of the polynomial:</TextBlock>
            <TextBox Name="txtDescription" TextWrapping="Wrap" Width="357" Height="60"></TextBox>
        </WrapPanel>
        <Button Margin="5,10,5,5" Name="Button1">Calculate</Button>
        <TextBox Name="txtResult" Margin="5" Height="148"></TextBox>
    </StackPanel>
</Window>