$\int\frac{5x+3}{x^3-2x^2-3x}dx$

$3\left(n+2\right)+b\left(n+2\right)$

$\left(-20xy^2+6x\right)dx+\left(3y^2-20x^2y\right)dy=0$

$2y+2sen^2\left(x\right)=0$

$2-corchete$

$sin^2\left(\frac{x}{2}\right)cos\left(\frac{x}{2}\right)=\frac{1}{2sin\left(x\right)}$

$-\frac{1}{2}\cdot3.6$