Khai triển Maclaurin cho hàm số \[y = \frac{{{{\left( {1 + x} \right)}^{100}}}}{{{{\left( {1 + 2x} \right)}^{40}}}}\] đến x2

\[f\left( x \right) = 1 - 20x - 230{x^2} + o\left( {{x^2}} \right)\]

\[f\left( x \right) = 1 + 20x + 230{x^2} + o\left( {{x^2}} \right)\]

\[f\left( x \right) = 1 - 20x + 230{x^2} + o\left( {{x^2}} \right)\]

\[f\left( x \right) = 1 + 20x - 230{x^2} + o\left( {{x^2}} \right)\]