$\left(2x-6y-10\right)^2$

$\left(x^2+1\right)dx+\frac{1}{y}dy=0$

$\int\:\frac{272x^2+4}{x^2\left(x-4\right)}dx$

$\ln\left(\sqrt[2]{\frac{1-\sin\left(x\right)}{1+\sin\left(x\right)}}\right)$

$\frac{11}{x\:}-2=\frac{3}{x}$

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

$\int9x\left(4-x\right)dx$