$\int_2^4k\left(1-\left(x-3\right)^2\right)dx$

$\frac{dt}{dy}=y^3-11y^2+10y+72$

$\lim_{x\to0}\left(\frac{x^2\left(x+1\right)^2}{4}\right)$

$\lim_{x\to4}\left(\frac{3-\sqrt{x^2+5}}{x^2-4}\right)$

$m^2-16+m^2+4m-21$

$x^2+14x+24=0$

$\left(x\cdot7\right)\left(x-8\right)$