$\left(-2abc\right)\:\left(-3ab\right)$

$\int x\ln\left|2x\right|dx$

$\left(ab-4\right)^2$

$dx+\left(y^4+x^2y^4\right)dy=0$

$\left(3xcosx\:+\:senx\:-3\right)dx\:+\:\left(2y\:+\:5\right)dy\:=0$

$\frac{10}{2}-4+\sqrt{4}$

$f\left(x\right)=\left(\frac{\left(1+2x^2\right)}{15-11x}\right)^4$