**Example 1** - no calculation required

The points where the graph passes through the x-axis or touches the x-axis can be directly read from the graph. Passes through = 1 factor. Touches and curves back = 2 identical factors.

**Example 2** - no calculation required

Each factor is a distinct zero. Count them.

**Example 3** - no calculation required

From the x column read the values where h(x) = 0.