Answer:
[tex](3*3) + 7 - 7(7) + 2*3 - 3*7 - 1[/tex]
[tex]3 * 3 = 9[/tex]
[tex]+7 = 16[/tex]
[tex]7 * 7 = 49[/tex]
[tex]49 - 16 = 33[/tex]
[tex]2 * 3 = 6[/tex]
[tex]6 + 33 = 39[/tex]
[tex]3 * 7 = 21[/tex]
[tex]39 - 21 = 18[/tex]
[tex]18 - 1 = 17[/tex]
Therefore,
unfactorized, the answer is 17. Result may vary on x and y assignments.