$\frac{dx}{dt}=15x+225-\frac{25x^2}{10}-\frac{75x}{2}$

$\int_1^{\infty}\left(\frac{1}{x^{0.9}}\right)dx$

$\left(16\right)\left(-8\right)\left(12\right)\left(-10\right)$

$\int\frac{cot^2\left(5x\right)}{csc\left(5x\right)}dx$

$\int\left(\frac{18x^2}{\sqrt[3]{x^3+4}}\right)dx$

$\frac{4}{2}+15$

$2x+\frac{3}{4}x+\frac{1}{4}x+x-\frac{5}{6}x$