$$-12y^2+30y^2-4y^2$$

$$\int\frac{5x-10}{\left(x^2-4x+11\right)^4}dx$$

$$\int\left(\frac{1}{9x^2-144}\right)dx$$

$$\frac{dy}{dx}=\sec^2\left(5x\right)e^{\tan\left(5x\right)}$$

$$\lim_{x\to0}\left(\frac{tan6x}{sin2x}\right)$$

$$b=8+2\left(f-3\right)$$

$$\lim_{x\to\infty}\left(1-\frac{1}{x}\right)^{0.7x}$$