$\left(4-x\right)y^2=x^3$

$\lim_{x\to h}\:\:\frac{x^2+h^2}{x+h}$

$-4x\ge-3+2x$

$\frac{d}{dx}\csc\left(x\right)-x\csc\left(x\right)\cot\left(x\right)$

$-\:6\:-\:\left[-8\:-\:\left(-16\:-\:25\right)\right]\:-\:9$

$10x^8y^5+20x^3y+15x^6y^4$

$\log\:_{10}\left(b\right)\left(8x+9z\right)$