In this problem we will give a graph sketch of f(x) = x4 - 4x.(a) Factor f(x), find the roots.(b) For each root from part

In this problem we will give a graph sketch of f(x) = x4 - 4x².(a) Factor f(x), find the roots.(b) For each root from part (a), give the degree.(c) Determine the sign decomposition for f(x) (aka where f(x) is positive and negative).(d) Graph f(x):