The first step factored both of the equations (on the too and bottom if the fraction)

**No.**To have a triangle, the two short sides must be longer than the long side, otherwise the two short sides will not touch.

Imagine you have three pencils, one long one and two short ones. Normally, you could make a triangle by touching each pencil end to another. But, if the two short ones are too short, then no matter how you angle the pencils, the ends will not touch (as shown in the image).

If you want that expressed algebraically, it would be (__15 over b)+6.__

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**Answer:**

**Step-by-step explanation:**

**Given**

**Required**

Write a definition

**First, we derive a formula for the series using:**

**From the attached data;**

**So:**

**Collect like terms**

**So, the definition for first 7 terms is:**