yes, it is an expression (since it does not have an equal sign) with three terms (a term is a number, variable or product of numbers and variables). The first term is 2/3x(x-1). The second term is 1/4x and the final term is the number -10. The first term will actually become two terms when you expand with the distrubutive property. Multiplying 2/3x by everything in the parenthesis, you get 2/3x^2-2/3x. Now combine the like terms (-2/3x and +1/4x) by establishing a common denominator of 12. We now have -8/12x+3/12x= -5/12x. So now our final expression (and final answer) is 2/3x^2 - 5/12x - 10.