2x - 1 7. If f(x) = (er + 2)2(x2 + 1) is to be expressed in partial fractions, what is the appropriate partial fraction form to use? [2 marks] A (A) (a + 2)2 A B O (B) + + D A B Or + D (C) + + T+2 (or + 2)2 r2+1 A B (D) ( + 2)2 + r2 +1 Ar + B (E) x2+1