$7-3^2+4$

$\cos\left(t\right)\cdot\frac{sin\left(b\right)}{sin\left(b-t\right)}$

$\frac{3}{4}m^2n^3-\frac{1}{2}m^2n^3$

$\left(\log_a\left(\frac{1}{x}\right)\right)^3$

$\int\left(\frac{1}{x\left(x+24\right)}\right)dx$

$\lim_{x\to0}\left(\frac{1-5^x}{x}\right)$

$\frac{5}{2x-1}\le\frac{1}{x-2}$