Which of the following must be a square ?

Which of the following must be true?

Which of the following must be added to x^2-2x+1/2 to make the result a perfect square?

Which of the following must be present in alums

Which of the following square(s) must be shaded so that given figure is symmetric along both lines LM and AB?

Which of the following is must for chlorophyll synthesis

Which of the following is must for chlorophyll synthesis

Which of the following is must for chlorophyll synthesis

Which of the following is must for chlorophyll synthesis

Which of the following is must for chlorophyll synthesis

Which of the following is must for chlorophyll synthesis