__ | 7. | (1/(x2+3x+2))+(1/(x2+4x+3)) | | A. | (2x+5)/((x+1)(x+2)(x+3))) |
__ | 8. | (1/(x2+3x+2))-(1/(x2+4x+3)) | | B. | 7/((2x-1)(3x+2)(x+3))) |
__ | 9. | (2/2x2+5x-3)+(3/(3x2+11x+6)) | | C. | (12x+1)/((2x-1)(3x+2)(x+3))) |
__ | 10. | (2/2x2+5x-3)-(3/(3x2+11x+6)) | | D. | 14/(x+1) |
__ | 11. | (7/x+3x+2)+(7/x+2)+(7/x+1) | | E. | (7)/((2x-1)(3x+2)(x+3))) |