The zerosand of are also the zeros of which is the original divided through by 3, the coefficient of . Known facts about the relationships between the coefficients and the zeros of a monic polynomial tell us that: and Since: then multiplying both sides by -1: Squaring both sides: and now since , we substitute for : So -------------------------- 1) We can find that by factoring the sum of two cubes. We already have values for and . ---------------------------- 2) We have Squaring both sides gives: And since , ------------------ You stop there but we could show that and and and and as far as we like. Edwin