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

$m^{2}+10m+2$

$\left(-4a+5b\right)^2$

$x^2+x+25$

$\left(m-7\right)\left(m+3\right)$

$\int\left(\frac{4}{x^2+4}\right)dx$

$\int\left(-2x^-5+4x^3-1\right)\:\cdot\:e^{\left(2x^-4+4x^4-4x\right)}\:dx$