$\int_{-\infty}^0\left(\frac{2x^2}{\left(x^2+1\right)^2}\right)dx$
$\left(-6x^2+8x-5\right)-\left(4+2x^2-3x\right)$
$-10+3x-x-7x+5x+7+2x$
$\frac{d}{dx}\left(x^2-2y^3+xy-8=0\right)$
$-1m^3+4m^2-5m+2$
$\left(x+4\right)+\left(x+4\right)+\left(2x-10\right)+\left(2x-10\right)+\left(2x-10\right)+\left(2x-10\right)$
$x+2=3x-8$
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