$\frac{30m}{13t}+\frac{15t}{52m}$

$\lim_{x\to0}\left(\frac{\sqrt{1+2x}-3}{\sqrt{x-2}\sqrt{2}}\right)$

$\left(sec\:x\right)y'=e^{\left(y+sinx\right)}$

$\int\frac{x^3}{\sqrt{4-25x^2}}dx$

$f\left(x\right)=\left(4x-3\right)^2$

$\frac{3}{5}x+\frac{2}{7\:}\ge\frac{8}{3}x-\frac{6}{5}$

$-4+1+-8$