WAEC - Further Mathematics (2009 - No. 6)
Find the coefficient of \(x^{4}\) in the binomial expansion of \((2 + x)^{6}\).
120
80
60
15
คำอธิบาย
\((2 + x)^{6} \)
\(x^{4} = ^{6}C_{2}(2^{2})(x^{4}) = 15 \times 4 = 60\)
\((2 + x)^{6} \)
\(x^{4} = ^{6}C_{2}(2^{2})(x^{4}) = 15 \times 4 = 60\)