book Maths Puzzle Numerical Ability

Need Help please!
2) Use the geometric sequence of numbers 1, 3, 9, 27, � to find the following:
a) What is r, the ratio between 2 consecutive terms?
Answer:
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book Other Question

I am trying to find the answer the the following problem.
The book states to find each Quotient.
(2u^3-13u^2-8u+7)/(u-7)
(-11u-8u-7)/(u-7)
(-3u+7)/(u-7)
This is as far as I have gotten.
Thanks in advance.
William Gray Simplify the following expression as much as possible:

3square root of 48 x square root of 12