2 or 288.
Just 2 or just 288 is wrong, since the way it's written results in having both answers be correct.
Sorta.
2 is the "more" correct, since multiplication between x(y) is "higher priority" than x*y, thusly, it means the entirety of 2(9+3) is the denominator.
http://www.purplemath.com/modules/orderops2.htm The general consensus among math people is that "multiplication by juxtaposition" (that is, multiplying by just putting things next to each other, rather than using the "" sign) indicates that the juxtaposed values must be multiplied together before processing other operations.
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