Graph f(x)=x^5+x^4-16x^3-16x^2
using given format and illustrate all work
1. use leading term test to find end behavior
2. Determine zeros of function by solving f(x)=0. any real zeros are first coordinates of x-intercepts.
3. Use x-intercepts (zeros) to divide axis intervals and select the test point in every interval to find sign of all function values in that interval.
4. Compute f(0)
5. Compute additional function values to find general shape of graph and then draw graph.