(10 letters) the second number in an ordered pair it tells the distance to move up or down from the origin
13. a word or phrase (16 letters)

Can someone me with this problem i don't understand i need

Three numbers x, y, and z are in the ratio 2: 7: 8. if 12 is subtracted from y, then three numbers form a geometric sequence (in the order x, y–12, z). find x, y, and z. there are 2 sets.

Which shows one way to determine the facts of x3+4x2+5x+20 by grouping