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**andrew2322** hello all, i was scanning my memory for some of the questions that were on my math exam, could you please confirm the following answers:

1.) is k^2 - 2k + 4 a factor of K^3 - 8? **My answer: NO.**

2.) For a solution to have two real and unequal solution, the discriminant should be? __my answer: GREATER THAN 0__

3.) Simplify (a-b)^2 - (a+b)^2. My answer: -4ab

4.) There are two decks of 52 playing cards, find the probability of obtaining a club or a king: __my answer: 16/52 or 4/13.__