Find f x g, g x f, and f x f

f(x) = 3sqrt x-1 g(x) = x^3+1
For the f(x) the 3 is little above the sqrt sign.

I do not understand how do find these.

To find f(x) x g(x), g(x) x f(x), and f(x) x f(x), you need to perform the indicated operations for each pair of functions.

1. f(x) x g(x):
To evaluate f(x) x g(x), you need to multiply the two functions together, substituting the given expressions for f(x) and g(x):
f(x) x g(x) = (3√(x-1)) x (x^3 + 1)

2. g(x) x f(x):
To evaluate g(x) x f(x), you need to multiply the two functions together, substituting the given expressions for g(x) and f(x):
g(x) x f(x) = (x^3 + 1) x (3√(x-1))

3. f(x) x f(x):
To evaluate f(x) x f(x), you need to square the function f(x):
f(x) x f(x) = (3√(x-1))^2

To simplify these expressions further or evaluate them for specific values of x, you can apply mathematical properties and rules such as the laws of exponents and simplifying radicals.