## Algebra: A Combined Approach (4th Edition)

First one : (f x g) (x) = f(g(x). You use g(x) and substitute it in to f(x). For example if g(x) is 4, and f(x) is 2x, then f(x) is 8. Second : fg(x) is the multiplication of the functions of f(x) and g(x) to create an entirely new function. Ex. F(x) is 2x and g(x) is 3x, thus gf(x) is 6$x^{2}$
First one : (f x g) (x) = f(g(x). You use g(x) and substitute it in to f(x). For example if g(x) is 4, and f(x) is 2x, then f(x) is 8. Second : fg(x) is the multiplication of the functions of f(x) and g(x) to create an entirely new function. Ex. F(x) is 2x and g(x) is 3x, thus gf(x) is 6$x^{2}$