1.3 二项式定理（练案一）-2020年高中同步教与学数学（人教B版选修2-3）

书书书 !"# ! $ % & ' !!" ! !"#$% !!"!! ! !"#$% ! ! &' " !! "" # 槡! "" $ !"#$%&'( ! !! " %& ) ' ' (&# ' ) ' $ )&) ' $ *&# #! ! 槡!" #" + !"#$*+','&( ! !! " %&' (&, )&$ *&+ -! - ! #".- " ' /# 0 "# ! ""# # " # "# - " - "# ' " ' # . # 0 "# ! "# # " # - ,/0 ! !! " %&! (&!$ )&.!, *&!, '!" - . ! ! " " !! !"#$,$12'0 ! !! " %&.) , !! " !# # ) , !! " !# (&) $ !! " 1 # .) , !! " !0 )&.) , !! " !- # ) , !! " 1 *&) , !! " !+ # .) , !! " !- ,! 34 " # . 2 槡! "" $ ,!"#$)5'6)7',8&9:0 . - !' # ;$ 2 # /.! # .!"#$%&'( ! !! " %&.',2 (&',2 )&.', *&', $! < ! " 槡. #" #00$ ,='!"#$ # > " ,?@A,'9B0 % # C " 槡/ #D#%EF !!!" %&# -003 (&.# -003 )&# -001 *&.# -001 +! 34 ! '"-" " 1 /# 0 "# ! ! !"" " "# # ! !"" " # " $ "# 1 ! !"" " 1 # . " # ! " " " # # " " $ " " # 1 " EF ! !! " %&+ 1 (&' 1 )&' 1 .! *&+ 1 .! 3! G #" - " ! 槡! "" $ ,!"#$>*%&' # .HI,JK& $ E F ! 1! G " # " ! ! " #" $ , = ' ! " # $ " - , 8 & 0 , # # . #/ ! ! L&MNO " !0! -='# 槡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槡! "" $ ='!"#$^*) , ',='#8&H_ # .!"#$%&'0 ! !! " %&.+ (&+ )&.#3 *&#3 #! < ! !"" " $ ! $ 0JK& " ,='!"#$ # ?&',B0 + # ` &',B0 ,! . ! !." # " $ ,/0 ! !! " %&0 (&+, )&+ # ., # *&+ # ", # -! ab -". ! - "槡! "# $ ,!"#$P'8&9B0 !#3 # .!"# $ ! " - ,8&( ! !! " %&+ (&.+ )&#! *&.#! '! - ! !"" " " ! !"" " # " ! !"" " - " $ " ! !"" " $ /# 0 "# ! "" # # " # " $ "# $ " $ # C # 0 "# ! "# # " $ "# $ /#,' D # $ EF ! !! " %&, (&$ )&+ *&3 ,! ". ! - 槡! "" !# !"#$,%&'0 ! !! " %&.!-#0 (&!-#0 )&.##0 *&##0 $! G - 槡". - 槡! "" $ !"#$,P'8&9B0 .-# # cd!"# ,%&'0 ! +! G #". ! ! " " $ !"#$> ! " # ',8&6> ! " '