Hi, i am studying for binomail thereom and need some help on some particular types of questions
1. when doing questions of finding particular terms with 2 expansions ie- (a + b)^5 * (a + c)^9 find a^4, whats the best way to answers them, as ovbiously expanding the whole thing will take too long.
2. when finding the greatest coefficient i keep getting it wrong, the reason i believe is that when using T(K) i take it as nCk-1 while in the cambridge book the use it as nCk should make a differance, however for T(k + 1) im using nCk, so im following through with the pattern but my answer isn't equivalent
also does any1 have worked solutions to cambridge 3u, and links to pastpapers for binimoial thereom, or worksheets for binimoial thereom with worked solutions, will appreciate it a ton
1. when doing questions of finding particular terms with 2 expansions ie- (a + b)^5 * (a + c)^9 find a^4, whats the best way to answers them, as ovbiously expanding the whole thing will take too long.
2. when finding the greatest coefficient i keep getting it wrong, the reason i believe is that when using T(K) i take it as nCk-1 while in the cambridge book the use it as nCk should make a differance, however for T(k + 1) im using nCk, so im following through with the pattern but my answer isn't equivalent
also does any1 have worked solutions to cambridge 3u, and links to pastpapers for binimoial thereom, or worksheets for binimoial thereom with worked solutions, will appreciate it a ton