Вычисли и запиши ответ

1. \(\displaystyle\int\_{4}^{4} (7x^7+4) dx = \) [ ].
2. \(\displaystyle\int\_{-2}^{2} (3x-6)^2 dx = \) [ ].
3. \(\displaystyle\int\_{1}^{2} \left(2+x^3-\dfrac{1}{x^2}\right){dx} = \) [ ].