When I get my lunch at school, and the lunch lady serves me.

You have two cards with a sum of -12 in both hands. a. what two cards could you have? b. you add two more cards to your hand, but the total sum if the cards remains the same, (-12).

Pls , the question is in the picture!

Find the condition that the zeros of the polynomial f(x) = x^3+3px^2+3px+r may be in a. p.