$\frac{8x+12}{6x+7}$

$\frac{5}{1-\sqrt{3x-5}}$

$\int\left(x^5\ln\left(x^7\right)\right)dx$

$\left(\frac{25\cdot\:i^2-30in+9n^2}{n^2}\right)\:\cdot\:\left(-3+\frac{5i}{n}\right)$

$\left(-37\right)\cdot\left(-32\right)$

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

$25\left(x+y\right)^2-\left(x-y\right)^2$