$x\frac{dy}{dx}+y=e\cdot x\sin x$

$\frac{dy}{dx}=\frac{2x}{4y+yx^2}$

$\frac{4a^2b}{8a}\cdot\frac{4a^3b^2}{a^2b^5}$

$0.5\cdot0.5\cdot12$

$\left|-2+1\right|-\left|5-7\right|-3\cdot\left(-1\right)+4\cdot\left|-4+1\cdot\left(3\right)\right|\left|-\left(2-3\right)\right|$

$\frac{\left(9x^4-24x^3-3x^2+8x\right)}{\left(x-1\right)}$

$3x+11\le14x+8$