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2. (a+b)pngkt 4 = a pkngt 4 + 4.a³b + 6 a²b² + 4.ab³ + b pngkt 4
3. (a+b)pngkt 5 = a pngkt 5 + 5. a pnkt 4 . b + 10. a³b² + 10a²b³ + 5 ab pngkt 4 + b pngkt 5
4. (a+b)pngkt 6 = a pngkt 6 + 6. a pnkt 5 . b +15 a pngkt 4 .b² + 20 a³b³ + 15 a²b pngkt 4 + 6 ab pngkt 5 + b pngkt 6
5. (a+b) pngkt 7 = a pngkt 7 + 7 a pngkt 6 . b + 21 a pngkt 5. b² + 35 a pngkt 4 . b³ +35 a³b pngkt 4+ 21 a²b pngkt 5 + 7 ab pngkt 6 + b pngkt 7
pola pascal : 1 1
2 1 2 1
3 1 3 3 1
4 1 4 6 4 1
5 1 5 10 10 5 1
6 1 6 15 20 15 6 1
7 1 7 21 35 35 21 7 1
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