[" 4.If "(1+2x+3x^(2))^(10)=a(0)+a(1)x+a...

[" 4.If "(1+2x+3x^(2))^(10)=a_(0)+a_(1)x+a_(2)x^(2)+...+a_(20)x^(20)" ,then "a_(1)],[" equals "],[[" (a) "10," (b) "20," (c) "210," (d) None of these "]]

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