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  1. R

    how to do this question?

    idk why i'm not getting this? what to do i dooo "On an Argand diagram, the points P and Q represent z1 and z2 respectively. OPQ is an equilateral triangle. Show that z1² + z2² = z1z2"
  2. R

    permutation + combinations help PLEASE!

    i would tell the couple to suck it up and sit with the other 4
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