$11\left(x+1\right)\frac{dy}{dx}-7y=28x$

$-2k>18$

$\frac{1}{3}a^3b^2c\:entre\:-\frac{1}{4}abc$

$2\cos\left(x\right)=\sin\left(x\right)\cos\left(x\right)$

$\left(24+\sqrt{y}\right)\left(2-\sqrt{y}\right)$

$f\left(x\right)=\sqrt[8]{\frac{6x+5}{8+6x}}$