Not sure how to set up the equation

Multiply −2x(6x^4−7x^2+x−5) express the answer in standard form. enter your answer in the box.

What adds to be the bottom number but also multiplies to be the top number with 8 on the bottom and 15 on top

Last week , donnell practiced the piano 3 hours longer than marcus . together, marcus and donnell practiced the piano 11 hours . for how many hours did each young man practiced the piano