$1.5^{\frac{3}{2}}\cdot2$

$5-x=10$

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

$\left(xy^2a^3+\frac{y.a^2}{5}\right).\left(xy^2a^3-\frac{y.a^2}{5}\right)$

$\left(4x^2+\frac{1}{2}y^5\right)^2$

$2y^2+10y+4y^2+x^2$

$\frac{1}{\csc\left(x\right)-\cot\left(x\right)}-\frac{1}{\csc\left(x\right)+\cot\left(x\right)}=\frac{2}{\sin\left(x\right)}$