exam Maths Puzzle Numerical Ability

Simplify the following, assume a,x and y are not zero.
-x^2y/ (-x^2)^2y^2
I totally didnt understand this problem.

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Can you PLEASE help me figure these out. I am clueless!Thanks in advance!

Solve.
1) Square root of 3x-8 +4=6

2)Find the distance between (1,-3)and(4,3) If the probability that an identified hurricane will make a direct hit on a certain stretch of beach is 0.20, what are the odds against a direct hit?