F

**factor: one of two or more expressions that are multiplied
together.**

**factor theorem: If P(x) is a polynomial, then if P(r)
= 0, then (x - r) is a factor of P(x).**

**factorial: the product of all the integers from 1 up to
the integer in question. The (!) **

**exclaimation point is used to mean factorial.**

**Fibonacci Sequence: 1, 1, 2, 3, 5, 8, 13, 21, 34, 55,
89, 144, 233, 377.... The sequence**

**in which every number is the sum of the two preceding numbers**

**G**

**geometric mean: the geometric mean of two numbers
is the square root of the product of
the**

**numbers. The geometric mean of n numbers is the
nth root of the
product of the numbers.**

**geometric sequence: a sequence of numbers of the
form a, ar, ar^{2}, ar^{3},.....,
ar^{n-}^{1}.**

**geometric series: the sum of a geometric sequence.**

**graph: the graph of an equation is the set of points
that make the equation true.**

**great circle: the circle formed by the intersection
of a plane passing through the center of
a
sphere.**

**greatest common factor: the greatest common factor of
two numbers, a and b, is the **

largest number that divides both a and b evenly.