* What should be added to both sides in order to complete the square? x2 + 12x + = 20 + 144 O 36 O 12 O 25

43

step-by-step explanation:

not sure if this is supposed to be a trick question. 43 is the only one that makes any sense.

so part 1: the y values stay the same, but the x values are opposite signs.

part 2 & 3: the line will be of equal lengths and will be straight.

part 4: you'd see the same characteristic because the x coordinate becomes a negative making them at equal distances from the y axis?