Help ASAP snfjsnfjdwnvjdosv

Need on this geometry question. explain how you did it.

3c2 + 2d)(–5c2 + d) select all of the partial products for the multiplication problem above.

If the angle bisectors of a pair of opposite angles of a quadrilateral are the opposite sides of a parallelogram formed by the two angle bisectors and two sides of the quadrilateral, is the quadrilateral always a parallelogram? explain your answer.