How to get an answer of 34 by using the following integers -1, 4, 40, and -25

Due to a packaging error, 4 cans labeled diet soda were accidentally filled with regular soda and placed in a 12 pack carton of diet soda. two cans were randomly selected from this 12 pack. what is the probability that both cans were regular soda?

Two years ago a man was six times as old as his daughter. in 18 years he will be twice as old as his daughter. determine their present ages.

Which shows one way to determine the facts of x3+4x2+5x+20 by grouping