$\int\frac{\left(\sqrt{x^2-25}\right)}{x^2}dx$

$\lim_{x\to-\infty}\left(1-\frac{3}{x}\right)^{2x}$

$\left(-4a+3c\right)\left(4a+3c\right)$

$\frac{dy}{dx}=1-\frac{y}{10}$

$\frac{25x^4}{36}+\frac{1}{25}+\frac{x^2}{3}$

$\lim_{x\to a}\left(\frac{\sqrt{x-b}-\sqrt{a-b}}{x^2-a^2}\right)$

$( 4 + 5 m ) ^ { 3 }$