$5-\left|6-3-\left(1-8\right)-3+6\right|+5$

$x2+20=12x$

$\left(3+x^2\right)\frac{dy}{dx}=6x\:+yx$

$\left(7+\sqrt{y}\right)\left(2-\sqrt{y}\right)$

$\int\left(2x^3-8x+5\right)dx$

$-5+\left(-9-\left|-9+\left(-9+5\right)-4\right|+2\right)-8$

$\left(+7\right)-\left(-10\right)-\left(+4\right)$