GMAT Quantitative Reasoning Practice Test 7

Statement (1) can be written as (X−4)(X2+X+2)=0.
The roots of this equation are one integer and two complex numbers, which you should pay no attention to since you were told that X is an integer.
Statement (2) is a simple equation, Y=4.
The value of the expression XY is 16 .
Both statements, taken together, are sufficient to answer the question.