$9x^8+30x^4+25$

$\left(x^{\frac{1}{3}}\right)\left(x^{\frac{4}{6}}\right)+\left(y^{\frac{2}{6}}\right)^3$

$\int\frac{\left(4-x^2\right)}{x^2}dx$

$\left(3.1\right)\left(0.25\right)$

$-\csc\left(x\right)\cdot\cot\left(x\right)$

$3x^3-24x^2+63x-54$

$5\left(3-x\right)=15$