By the binomial series formula, we find 1 = (1+x) 1/'=1- fx+ 00 | 09 The Maclaurin series of the function f(x) =In (x + v9 + x2) can be found by this binomial series and the fact that- dx In (x + V9 + x2) = V9+12 Let the Maclaurin series be In (a + v9 + a2) = 10 n 0 Cnc" . Then C5 = O a) 3 1280 Ob) 1 3240 O c 3 1280 O d) 1 48 Oe) 1 162 Of) 1 162