# Pre-Cal(Please help)

posted by
**Hannah**
.

Find (a) f X g , (b) g X f, and (c) 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.

my answers were:

(a) = 3sqrt x^4 -1

(b) = x^4 -1

(c) = 6sqrt x+1

These answers are wrong but I do not know how to do this.