You're asking about the possible values of angle 3, given that its measure is represented by the expression x² + 4x. Here's how to think about this:

* Angles in Geometry: Angles are typically measured in degrees.

* Restrictions on Angles: In basic geometry, angles usually fall within the range of 0 degrees to 180 degrees (for straight angles).

Finding Possible Values:

To find the possible values of angle 3, you need to consider the range of values that the expression x² + 4x can produce.

Here's a breakdown of the possibilities, keeping in mind the restrictions of angles:

1. Positive Values:

* The expression x² + 4x can produce positive values. For example, if x = 1, the angle measure would be 5 degrees.

* Important: If x is a large enough positive number, the expression will result in very large angles, which might exceed the usual range of angles in geometry.

2. Negative Values:

* The expression x² + 4x can produce negative values. For example, if x = -1, the angle measure would be -3 degrees.

* Important: Negative angle measures are not typically used in basic geometry, but they do exist in some contexts.

Conclusion:

Without more context or specific restrictions on the value of x, you can't definitively state the possible values of angle 3. It could be any value depending on the value of x. However, it's important to remember that in most geometric situations, angles are expected to be positive and within a certain range (usually 0 to 180 degrees).