Which of the following expressions represents the simplified version of the expression below? (12x4−4x3+7x+6)+(3x2−4x+14)

A. 15x6−4x3+3x+20
B. 12x4−4x3+3x2+3x+20
C. 15x6−8x4+21x+6
D. 12x4−x3+3x+20

18

step-by-step explanation:

draw the shape and you will see that f and k are actually at adjacent vertices (points of the hexagon that are neighboring).   so find the distance between (1,2) and (4,2).   that is easy since (1,2) and (4,2) is just a vertical distance to count, which is 3.   it is a regular polygon which means all sides are congruent.   you have 6 sides (hexa) so multiply 6 by 3 to receive 18.

the correct answers i think are b. and d.

give me brainliest if it is correct!