$$\int\frac{11x^2+5x}{14}dx$$

$$\int\frac{-3}{\left(x+4\right)}dx$$

$$\lim_{x\to0}\left(e^x+7x\right)^{\frac{9}{x}}$$

$$\int_{\frac{1}{2}}^a\left(xln\left(4x\right)\right)dx$$

$$\left(2x+3\right)^2-\left(x+4\right)^2-3\left(x+1\right)$$

$$x+2-5x$$