$$a^4\left(a+b\right)$$

$$\int\left(\frac{x^8}{\sqrt{x^9-5}}\right)dx$$

$$x+10<10$$

$$\left(2x^2\:-\:3\right)\:\left(2x^3\:-\:3x^2\:+\:4x\right)$$

$$\left(3x^2+3\right)\left(x^2-1\right)$$

$$\left(5x^3+11x^2-15x+3\right)+\left(18x^2+5-3x^3\right)$$

$$\:\frac{3a^3-5ab^2-6a^2b^3}{-2a}\:$$