exam Maths Puzzle Numerical Ability

Factor the trinomial. Factor out all common monomials first.

9 x 3 - 9 x 2 + 2 x.

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Can someone help me on this?
I need to find the first and third quartiles, Q1 and Q3, of the following set of numbers:

13,7,15,13,13,12,9,11,19,9

Thanks,
Lyn I do not understand this at all. I am to evaluate this problem but I am just confused.

^3sqrt-27