the coefficient of x2 inthe expansion of (1+9x+27x^2+27x^3)^10

the coefficient of x2 inthe expansion of (1+9x+27x^2+27x^3)^10


1 Answers

Badiuddin askIITians.ismu Expert
148 Points
12 years ago

Dear sri


 = (1+3x)30

so co efficient of x2 is = 30C2 32


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