$$\frac{d}{dx}\ln7x^2$$

$$\int x\cdot cos\left(10x\right)dx$$

$$\int\frac{x+12}{3x^2-5x-2}dx$$

$$-117+185-242-315$$

$$\left(-2+m\right)^2\left(\frac{x}{3}+y\right)\left(\frac{x}{3}-y\right)$$

$$\left(a^3-b^2\right)\cdot\left(a^3+\:b^2\right)$$

$$6c^3-12c^2d^2+3cd$$