해법
확장 (x3−x1)24
해법
x72−24x68+276x64−2024x60+10626x56−42504x52+134596x48−346104x44+735471x40−1307504x36+1961256x32−2496144x28+2704156x24−2496144x20+1961256x16−1307504x12+735471x8−346104x4+134596−x442504+x810626−x122024+x16276−x2024+x241
솔루션 단계
(x3−x1)24
이항 정리 적용: (a+b)n=i=0∑n(in)a(n−i)bia=x3,b=−x1
=i=0∑24(i24)(x3)(24−i)(−x1)i
합계 확장
=0!(24−0)!24!(x3)24(−x1)0+1!(24−1)!24!(x3)23(−x1)1+2!(24−2)!24!(x3)22(−x1)2+3!(24−3)!24!(x3)21(−x1)3+4!(24−4)!24!(x3)20(−x1)4+5!(24−5)!24!(x3)19(−x1)5+6!(24−6)!24!(x3)18(−x1)6+7!(24−7)!24!(x3)17(−x1)7+8!(24−8)!24!(x3)16(−x1)8+9!(24−9)!24!(x3)15(−x1)9+10!(24−10)!24!(x3)14(−x1)10+11!(24−11)!24!(x3)13(−x1)11+12!(24−12)!24!(x3)12(−x1)12+13!(24−13)!24!(x3)11(−x1)13+14!(24−14)!24!(x3)10(−x1)14+15!(24−15)!24!(x3)9(−x1)15+16!(24−16)!24!(x3)8(−x1)16+17!(24−17)!24!(x3)7(−x1)17+18!(24−18)!24!(x3)6(−x1)18+19!(24−19)!24!(x3)5(−x1)19+20!(24−20)!24!(x3)4(−x1)20+21!(24−21)!24!(x3)3(−x1)21+22!(24−22)!24!(x3)2(−x1)22+23!(24−23)!24!(x3)1(−x1)23+24!(24−24)!24!(x3)0(−x1)24
0!(24−0)!24!(x3)24(−x1)0간소화하다 :x72
1!(24−1)!24!(x3)23(−x1)1간소화하다 :−24x68
2!(24−2)!24!(x3)22(−x1)2간소화하다 :276x64
3!(24−3)!24!(x3)21(−x1)3간소화하다 :−2024x60
4!(24−4)!24!(x3)20(−x1)4간소화하다 :10626x56
5!(24−5)!24!(x3)19(−x1)5간소화하다 :−42504x52
6!(24−6)!24!(x3)18(−x1)6간소화하다 :134596x48
7!(24−7)!24!(x3)17(−x1)7간소화하다 :−346104x44
8!(24−8)!24!(x3)16(−x1)8간소화하다 :735471x40
9!(24−9)!24!(x3)15(−x1)9간소화하다 :−1307504x36
10!(24−10)!24!(x3)14(−x1)10간소화하다 :1961256x32
11!(24−11)!24!(x3)13(−x1)11간소화하다 :−2496144x28
12!(24−12)!24!(x3)12(−x1)12간소화하다 :2704156x24
13!(24−13)!24!(x3)11(−x1)13간소화하다 :−2496144x20
14!(24−14)!24!(x3)10(−x1)14간소화하다 :1961256x16
15!(24−15)!24!(x3)9(−x1)15간소화하다 :−1307504x12
16!(24−16)!24!(x3)8(−x1)16간소화하다 :735471x8
17!(24−17)!24!(x3)7(−x1)17간소화하다 :−346104x4
18!(24−18)!24!(x3)6(−x1)18간소화하다 :134596
19!(24−19)!24!(x3)5(−x1)19간소화하다 :−x442504
20!(24−20)!24!(x3)4(−x1)20간소화하다 :x810626
21!(24−21)!24!(x3)3(−x1)21간소화하다 :−x122024
22!(24−22)!24!(x3)2(−x1)22간소화하다 :x16276
23!(24−23)!24!(x3)1(−x1)23간소화하다 :−x2024
24!(24−24)!24!(x3)0(−x1)24간소화하다 :x241
=x72−24x68+276x64−2024x60+10626x56−42504x52+134596x48−346104x44+735471x40−1307504x36+1961256x32−2496144x28+2704156x24−2496144x20+1961256x16−1307504x12+735471x8−346104x4+134596−x442504+x810626−x122024+x16276−x2024+x241