A large class in probability theory is taking

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).

Find the zeros of the function. write the smaller solution first, and the larger solution second f(x)= (x+6)^2-49

What are the solutions of the system? solve by graphing. y = -x^2 -6x - 7 y = 2