Tính đạo hàm cấp n của hàm số \(y = \frac{{2x + 1}}{{{x^2} - 5x + 6}}\)

\({y^{(n)}} = \frac{{{{(2)}^n}.7.n!}}{{{{(x - 2)}^{n + 1}}}} - \frac{{{{(1)}^n}.5.n!}}{{{{(x - 3)}^{n + 1}}}}\)

\({y^{(n)}} = \frac{{{{( - 1)}^{n + 1}}.7.n!}}{{{{(x - 2)}^{n + 1}}}} - \frac{{{{( - 1)}^{n + 1}}.5.n!}}{{{{(x - 3)}^{n + 1}}}}\)

\({y^{(n)}} = \frac{{{{( - 1)}^n}.7.n!}}{{{{(x - 2)}^n}}} - \frac{{{{( - 1)}^n}.5.n!}}{{{{(x - 3)}^n}}}\)

\({y^{(n)}} = \frac{{{{( - 1)}^n}.7.n!}}{{{{(x - 2)}^{n + 1}}}} - \frac{{{{( - 1)}^n}.5.n!}}{{{{(x - 3)}^{n + 1}}}}\)