Đáp án:

• \( \int \frac{1}{x^2 + x - 6} \, dx = \int \frac{1}{(x + 3)(x - 2)} \, dx = \frac{1}{5} \int \left( \frac{1}{x - 2} - \frac{1}{x + 3} \right) \, dx\)