Question

help please !! im unsure how to do sigma abc (you can ignore the other ones, just need sigma abc) Tysm!!!

Answer 1

oh Viete's Formula, i'll just show you a) as example

∑a = 16/2 = 8

∑ab = 24/2 = 12

∑abc = 3/2

abcd = 4/2 = 2
and ∑abc = - koef x/koef x⁴