Can anyone please?

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  • Ian H
    Lv 7
    1 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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