$\left(-2m^3-m^2+3\right)^2$

$\frac{9a^4b^7}{36a^6b^{10}}$

$x^2+6x=55$

$\int\left(\sqrt{3+s}\right)\left(s+1\right)^2\:ds$

$\lim_{x\to-1}\left(\frac{x^3-7x^2+4x+12}{x+1}\right)$

$\ln\:\left(\left(\sec\:\left(x\right)+\tan\:\left(x\right)\right)^{\cos\:\left(x\right)}\right)$

$\frac{25sin20}{sin19}$