以下是一道SAT数学考试的例题：
If x > 0, which of the following represents the product of x, two more than x, and three less than x?A) 3x - 2x^2B) 2x^2 + x - 3C) 2x^2 - x - 3D) 3x^2 - 2x - 3E) 3x^2 - x - 2解答：需要将问题转换成代数表达式，根据题意可以写出表达式：x(x + 2)(x - 3)将其进行简化和化简：x(x + 2)(x - 3) = x(x^2 - x - 6)= x^3 - x^2 - 6x因此，答案为D) 3x^2 - 2x - 3