Which product of prime polynomials is equivalent to 3x^4-81x?

3x(x-3)(X power 2 +3X + 9)

“exterior angles of triangles. an exterior (or external) angle is the angle between one side of a triangle and the extension of an adjacent side. try this drag the orange dots on any vertex to reshape the triangle.” look to get to the answer i explained what it means and other things i hope it you .