What are the solutions to the quadratic equation x2 - 16 = 0?
o x= 2 and x = -2
o x= 4 and x=-4
o x= 8 and x = -8
o x = 16 and x = -16
xxx

x= 4 and x=-4

Step-by-step explanation:

x^2 - 16 = 0

Add 16 to each side

x2 - 16+16 = 0+16

x^2 =16

Take the square root of each side

sqrt(x^2) = sqrt(16)

x = ±4

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.