$$\left(5x+2\right)\left(3x\right)$$

$$2x^3+x^2-11x-10$$

$$a^2+12a-364$$

$$cm^2\cdot cm$$

$$3\:-18\:-12\:+\:5\:+\:3$$

$$\lim_{x\to1}\left(\frac{1-\cos\left(x-1\right)}{ln^2x}\right)$$

$$\frac{\left(4b^3+25b^2+22b-21\right)}{\left(b+5\right)}$$