解
展開する (3p+8)25
解
325p25+324⋅200p24+323⋅19200p23+322⋅1177600p22+321⋅51814400p21+320⋅1740963840p20+319⋅46425702400p19+50401.96842E24p18+403209.4484E25p17+3628804.28328E27p16+141757.13879E26p15+222754.07931E27p14+4677752.66515E29p13+4677757.10707E29p12+155925234⋅3.15189E19p11+815⋅193017009240p10+816⋅40211876925p9+817⋅7096213575p8+818⋅1051290900p7+819⋅129105900p6+820⋅12910590p5+821⋅1024650p4+822⋅62100p3+823⋅2700p2+824⋅75p+825
解答ステップ
(3p+8)25
2項定理を適用する: (a+b)n=i=0∑n(in)a(n−i)bia=3p,b=8
=i=0∑25(i25)(3p)(25−i)⋅8i
総和を展開する
=0!(25−0)!25!(3p)25⋅80+1!(25−1)!25!(3p)24⋅81+2!(25−2)!25!(3p)23⋅82+3!(25−3)!25!(3p)22⋅83+4!(25−4)!25!(3p)21⋅84+5!(25−5)!25!(3p)20⋅85+6!(25−6)!25!(3p)19⋅86+7!(25−7)!25!(3p)18⋅87+8!(25−8)!25!(3p)17⋅88+9!(25−9)!25!(3p)16⋅89+10!(25−10)!25!(3p)15⋅810+11!(25−11)!25!(3p)14⋅811+12!(25−12)!25!(3p)13⋅812+13!(25−13)!25!(3p)12⋅813+14!(25−14)!25!(3p)11⋅814+15!(25−15)!25!(3p)10⋅815+16!(25−16)!25!(3p)9⋅816+17!(25−17)!25!(3p)8⋅817+18!(25−18)!25!(3p)7⋅818+19!(25−19)!25!(3p)6⋅819+20!(25−20)!25!(3p)5⋅820+21!(25−21)!25!(3p)4⋅821+22!(25−22)!25!(3p)3⋅822+23!(25−23)!25!(3p)2⋅823+24!(25−24)!25!(3p)1⋅824+25!(25−25)!25!(3p)0⋅825
簡素化 0!(25−0)!25!(3p)25⋅80:325p25
簡素化 1!(25−1)!25!(3p)24⋅81:324⋅200p24
簡素化 2!(25−2)!25!(3p)23⋅82:323⋅19200p23
簡素化 3!(25−3)!25!(3p)22⋅83:322⋅1177600p22
簡素化 4!(25−4)!25!(3p)21⋅84:321⋅51814400p21
簡素化 5!(25−5)!25!(3p)20⋅85:320⋅1740963840p20
簡素化 6!(25−6)!25!(3p)19⋅86:319⋅46425702400p19
簡素化 7!(25−7)!25!(3p)18⋅87:50401.96842E24p18
簡素化 8!(25−8)!25!(3p)17⋅88:403209.4484E25p17
簡素化 9!(25−9)!25!(3p)16⋅89:3628804.28328E27p16
簡素化 10!(25−10)!25!(3p)15⋅810:141757.13879E26p15
簡素化 11!(25−11)!25!(3p)14⋅811:1559252.85552E28p14
簡素化 12!(25−12)!25!(3p)13⋅812:479001600812⋅3.97138E21p13
簡素化 13!(25−13)!25!(3p)12⋅813:479001600813⋅1.32379E21p12
簡素化 14!(25−14)!25!(3p)11⋅814:155925234⋅3.15189E19p11
簡素化 15!(25−15)!25!(3p)10⋅815:815⋅193017009240p10
簡素化 16!(25−16)!25!(3p)9⋅816:816⋅40211876925p9
簡素化 17!(25−17)!25!(3p)8⋅817:817⋅7096213575p8
簡素化 18!(25−18)!25!(3p)7⋅818:818⋅1051290900p7
簡素化 19!(25−19)!25!(3p)6⋅819:819⋅129105900p6
簡素化 20!(25−20)!25!(3p)5⋅820:820⋅12910590p5
簡素化 21!(25−21)!25!(3p)4⋅821:821⋅1024650p4
簡素化 22!(25−22)!25!(3p)3⋅822:822⋅62100p3
簡素化 23!(25−23)!25!(3p)2⋅823:823⋅2700p2
簡素化 24!(25−24)!25!(3p)1⋅824:824⋅75p
簡素化 25!(25−25)!25!(3p)0⋅825:825
=325p25+324⋅200p24+323⋅19200p23+322⋅1177600p22+321⋅51814400p21+320⋅1740963840p20+319⋅46425702400p19+50401.96842E24p18+403209.4484E25p17+3628804.28328E27p16+141757.13879E26p15+1559252.85552E28p14+479001600812⋅3.97138E21p13+479001600813⋅1.32379E21p12+155925234⋅3.15189E19p11+815⋅193017009240p10+816⋅40211876925p9+817⋅7096213575p8+818⋅1051290900p7+819⋅129105900p6+820⋅12910590p5+821⋅1024650p4+822⋅62100p3+823⋅2700p2+824⋅75p+825
1559252.85552E28p14=222754.07931E27p14
479001600812⋅3.97138E21p13=4677752.66515E29p13
479001600813⋅1.32379E21p12=4677757.10707E29p12
=325p25+324⋅200p24+323⋅19200p23+322⋅1177600p22+321⋅51814400p21+320⋅1740963840p20+319⋅46425702400p19+50401.96842E24p18+403209.4484E25p17+3628804.28328E27p16+141757.13879E26p15+222754.07931E27p14+4677752.66515E29p13+4677757.10707E29p12+155925234⋅3.15189E19p11+815⋅193017009240p10+816⋅40211876925p9+817⋅7096213575p8+818⋅1051290900p7+819⋅129105900p6+820⋅12910590p5+821⋅1024650p4+822⋅62100p3+823⋅2700p2+824⋅75p+825