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# Complex.Add Method

Silverlight

Adds two complex numbers and returns the result.

Namespace:  System.Numerics
Assembly:  System.Numerics (in System.Numerics.dll)
```public static Complex Add(
Complex left,
Complex right
)
```

#### Parameters

left
Type: System.Numerics.Complex
The first complex number to add.
right
Type: System.Numerics.Complex
The second complex number to add.

#### Return Value

Type: System.Numerics.Complex
The sum of left and right.

The addition of a complex number, a + bi, and a second complex number, c + di, takes the following form:

(a + c) + (b + d)i.

If the method call results in an overflow in either the real or imaginary component, the value of the component is either Double.PositiveInfinity or Double.NegativeInfinity.

Languages that do not support custom operators can use the Add method to perform addition with complex numbers.

The following example illustrates addition with complex numbers.

```
using System;
using System.Numerics;

public class Example
{
public static void Demo(System.Windows.Controls.TextBlock outputBlock)
{
Complex[] values = { new Complex(12.3, -1.4),
new Complex(-6.2, 3.1),
new Complex(8.9, 1.5) };
foreach (var c1 in values)
foreach (var c2 in values)
outputBlock.Text += String.Format("{0} + {1} = {2}", c1, c2,
Complex.Add(c1, c2)) + "\n";
}
}
// The example displays the following output:
//       (12.3, -1.4) + (12.3, -1.4) = (24.6, -2.8)
//       (12.3, -1.4) + (-6.2, 3.1) = (6.1, 1.7)
//       (12.3, -1.4) + (8.9, 1.5) = (21.2, 0.1)
//       (-6.2, 3.1) + (12.3, -1.4) = (6.1, 1.7)
//       (-6.2, 3.1) + (-6.2, 3.1) = (-12.4, 6.2)
//       (-6.2, 3.1) + (8.9, 1.5) = (2.7, 4.6)
//       (8.9, 1.5) + (12.3, -1.4) = (21.2, 0.1)
//       (8.9, 1.5) + (-6.2, 3.1) = (2.7, 4.6)
//       (8.9, 1.5) + (8.9, 1.5) = (17.8, 3)

```

#### Silverlight

Supported in: 5, 4

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

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