$$\int\left(7x-9\right)^7dx$$

$$\left(3x^3y^2\right)\left(2x^4y^3\right)\left(-4xy\right)$$

$$\left(3\cos x+7\right)\left(-2\sin x-1\right)$$

$$\left(1+h\right)^4$$

$$\frac{\left(6x^3-23x^2+10x-4\right)}{\left(3x-1\right)}$$

$$\int\frac{7}{1+x+x^2}dx$$

$$\frac{d}{dx}\left(\frac{3x-y}{x+2y}\right)$$