$$\frac{d^{10}}{dx^{10}}\left(x\cdot e^{-x}\right)$$

$$4x\left[5x^2-5x+3\right]$$

$$\int_{\frac{\pi}{4}}^{\frac{\pi}{3}}\left(4\sec\left(x\right)\tan\left(x\right)\right)dx$$

$$5a^2-20a-160$$

$$x^2+x^2b$$

$$5x^6y+15x^2y^3-30x^3y^2$$