$$2t\left(1-\left(y-t^2\right)^2\right)$$

$$-\frac{1}{4}x^2y^2+\frac{7}{8}x+8x^4+\frac{3}{8}x^2y^2-9x^4$$

$$a^2-25a+36$$

$$\frac{dy}{dx}\left(x^2y^2=x^2y+3xy^2\right)$$

$$\int\left(\frac{sinx}{\left(1-cosx\right)^3}\right)dx$$

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

$$-7\:2-9-5$$