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受欢迎的 代数 >

展开 (7-\sqrt[5]{x/(282475249)})^{17}

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解答

展开 (7−5282475249x​​)17

解答

717−714⋅175x​+715⋅136(5282475249x​​)2−714⋅680(5282475249x​​)3+713⋅2380(5282475249x​​)4−303212x+86632x5282475249x​​−52824752492​19448x5x2​​+752824752493​24310x5x3​​−4952824752494​24310x5x4​​+9688901040719448x2​−823543⋅34325282475249​1768x25x​​+117649⋅2401252824752492​884x25x2​​−16807352824752493​340x25x3​​+3435⋅4952824752494​680x25x4​​−4914136x3​+7295282475249​17x35x​​−2824752493x3(5282475249x​​)2​
求解步骤
(7−5282475249x​​)17
使用二项式定理: (a+b)n=i=0∑n​(in​)a(n−i)bia=7,b=−5282475249x​​
=i=0∑17​(i17​)⋅7(17−i)(−5282475249x​​)i
展开求和
=0!(17−0)!17!​⋅717(−5282475249x​​)0+1!(17−1)!17!​⋅716(−5282475249x​​)1+2!(17−2)!17!​⋅715(−5282475249x​​)2+3!(17−3)!17!​⋅714(−5282475249x​​)3+4!(17−4)!17!​⋅713(−5282475249x​​)4+5!(17−5)!17!​⋅712(−5282475249x​​)5+6!(17−6)!17!​⋅711(−5282475249x​​)6+7!(17−7)!17!​⋅710(−5282475249x​​)7+8!(17−8)!17!​⋅79(−5282475249x​​)8+9!(17−9)!17!​⋅78(−5282475249x​​)9+10!(17−10)!17!​⋅77(−5282475249x​​)10+11!(17−11)!17!​⋅76(−5282475249x​​)11+12!(17−12)!17!​⋅75(−5282475249x​​)12+13!(17−13)!17!​⋅74(−5282475249x​​)13+14!(17−14)!17!​⋅73(−5282475249x​​)14+15!(17−15)!17!​⋅72(−5282475249x​​)15+16!(17−16)!17!​⋅71(−5282475249x​​)16+17!(17−17)!17!​⋅70(−5282475249x​​)17
化简 0!(17−0)!17!​⋅717(−5282475249x​​)0:717
化简 1!(17−1)!17!​⋅716(−5282475249x​​)1:−5282475249​716⋅175x​​
化简 2!(17−2)!17!​⋅715(−5282475249x​​)2:715⋅136(5282475249x​​)2
化简 3!(17−3)!17!​⋅714(−5282475249x​​)3:−714⋅680(5282475249x​​)3
化简 4!(17−4)!17!​⋅713(−5282475249x​​)4:713⋅2380(5282475249x​​)4
化简 5!(17−5)!17!​⋅712(−5282475249x​​)5:−303212x
化简 6!(17−6)!17!​⋅711(−5282475249x​​)6:711⋅12376(5282475249x​​)6
化简 7!(17−7)!17!​⋅710(−5282475249x​​)7:−5493578642552(5282475249x​​)7
化简 8!(17−8)!17!​⋅79(−5282475249x​​)8:980996186170(5282475249x​​)8
化简 9!(17−9)!17!​⋅78(−5282475249x​​)9:−140142312310(5282475249x​​)9
化简 10!(17−10)!17!​⋅77(−5282475249x​​)10:282475249216016264264x2​
化简 11!(17−11)!17!​⋅76(−5282475249x​​)11:−1456024024(5282475249x​​)11
化简 12!(17−12)!17!​⋅75(−5282475249x​​)12:104001716(5282475249x​​)12
化简 13!(17−13)!17!​⋅74(−5282475249x​​)13:−5714380(5282475249x​​)13
化简 14!(17−14)!17!​⋅73(−5282475249x​​)14:233240(5282475249x​​)14
化简 15!(17−15)!17!​⋅72(−5282475249x​​)15:−28247524936664x3​
化简 16!(17−16)!17!​⋅71(−5282475249x​​)16:119(5282475249x​​)16
化简 17!(17−17)!17!​⋅70(−5282475249x​​)17:−(5282475249x​​)17
=717−5282475249​716⋅175x​​+715⋅136(5282475249x​​)2−714⋅680(5282475249x​​)3+713⋅2380(5282475249x​​)4−303212x+711⋅12376(5282475249x​​)6−5493578642552(5282475249x​​)7+980996186170(5282475249x​​)8−140142312310(5282475249x​​)9+282475249216016264264x2​−1456024024(5282475249x​​)11+104001716(5282475249x​​)12−5714380(5282475249x​​)13+233240(5282475249x​​)14−28247524936664x3​+119(5282475249x​​)16−(5282475249x​​)17
化简 717−5282475249​716⋅175x​​+715⋅136(5282475249x​​)2−714⋅680(5282475249x​​)3+713⋅2380(5282475249x​​)4−303212x+711⋅12376(5282475249x​​)6−5493578642552(5282475249x​​)7+980996186170(5282475249x​​)8−140142312310(5282475249x​​)9+282475249216016264264x2​−1456024024(5282475249x​​)11+104001716(5282475249x​​)12−5714380(5282475249x​​)13+233240(5282475249x​​)14−28247524936664x3​+119(5282475249x​​)16−(5282475249x​​)17:717−714⋅175x​+715⋅136(5282475249x​​)2−714⋅680(5282475249x​​)3+713⋅2380(5282475249x​​)4−303212x+86632x5282475249x​​−52824752492​19448x5x2​​+752824752493​24310x5x3​​−4952824752494​24310x5x4​​+9688901040719448x2​−823543⋅34325282475249​1768x25x​​+117649⋅2401252824752492​884x25x2​​−16807352824752493​340x25x3​​+3435⋅4952824752494​680x25x4​​−4914136x3​+7295282475249​17x35x​​−2824752493x3(5282475249x​​)2​
=717−714⋅175x​+715⋅136(5282475249x​​)2−714⋅680(5282475249x​​)3+713⋅2380(5282475249x​​)4−303212x+86632x5282475249x​​−52824752492​19448x5x2​​+752824752493​24310x5x3​​−4952824752494​24310x5x4​​+9688901040719448x2​−823543⋅34325282475249​1768x25x​​+117649⋅2401252824752492​884x25x2​​−16807352824752493​340x25x3​​+3435⋅4952824752494​680x25x4​​−4914136x3​+7295282475249​17x35x​​−2824752493x3(5282475249x​​)2​

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