Mathematics
Senior High
8番を教えてください
8. 二項定理を使って,次の等式が成り立つことを示せ。
nCo-n C1+„C2+....+(-1)".nCn=0
8.二項定理
(a+b)"="Coa"+nCia"-1b+nCza"-262+
······ + Cab"-1+Cb"
の両辺に, α=1,b=-1 を代入すると,
n
(1-1)"="Co+,C」(−1)+,C2・(−1)'+
よって,
......+w Cw-1 (-1)"'+C.(-1)"
nCo-C1+C2+....+(-1)"nC=0
(4) 商は2x2+x-3
余りは 0
11. (1) 商は2x1
全りは0
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