Exam Maths Puzzle Algebra

What the answer to x^3 + x^4 + x^7?

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Exam Other Question

How do you factor out the 12 in
X = -12 +/- 12 times the square root of 15i divided by 24.
Q. you are drawing cards without replacement from the infamous "Iraq's Most Wanted" deck issued by the U.S. Military. If you are drawing from the full deck of 55 cards, what are the following probabilities:

Q1. You draw a card that is not Saddam Hussein

Q2. You draw three cards, which end up being Saddam Hussein and his two sons.

Q3. You draw 14 cards and not one of them is Saddam Hussein.