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- Ian HLv 71 month ago
Pascal for power 7 ==>1, 7, 21, 35, 35, 21, 7, 1

Term in x^3*(-3y)^4 has Pascal coefficient 35

Full coefficient is 35 * 81 = 2835

S = 3 + 6 + 12 + 24 + ..... + 3*2^(n – 1)

2S = 6 + 12 + 24 + ..... + 3*2^n

S = 3(2^n – 1) = 3069

n = 10 installments, because 3*(1024 – 1) = 3069

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