$\frac{\left(2sin^2x+cos2x\right)}{cscx}$

$\left(4m-8n\right)\left(4m+8n\right)$

$\int\sqrt[2]{8x^5}dx$

$-2x^2+8x^2-3x+2x^2$

$9w^2-12w+4$

$\left(x^7\right)^9$

$\left(\frac{1}{2}x^3-\frac{1}{4}x^2-5x-9\right)-\left(\frac{1}{5}x^3-\frac{8}{3}x^3+\frac{5}{4}+\frac{1}{2}\right)$