$$\left(1-u\right)\sqrt{u}$$

$$-x^4+5x^2-3x-1-\left(5x^4+3x^3-x^22x+3\right)$$

$$16\:-\:4\:x^2$$

$$\int\frac{5x-4}{x^2-5x}dx$$

$$\csc^2\left(x\right)-\sin^2\left(x\right)-\cos^2\left(x\right)=\cot^2\left(x\right)$$

$$-1\left(3-4\right)-1^2$$

$$5b^3z^{-2}\cdot8b^{-3}z^6$$