$\frac{csc\:x\:-sin\:x}{sin\:x}=\:cot^2x$

$\left(\sqrt[3]{ab^2}\right)\left(2\sqrt[4]{3a^3b^2}\right)$

$10x^2+8+6x^2+3+9x^2+5$

$a+b-b+a+a+b$

$6x^2+7x+1$

$\lim_{x\to\infty}\left(sqrt\left(x^2+5\cdot x-7\right)-sqrt\left(x^2+3\cdot x+1\right)\right)$

$\int\frac{4x^2}{\sqrt{x^3+8}}\:dx$