$\frac{4x^2+3x-2\left(1-k\right)}{x-2}$
$2y+3x=8\:$
$\left(t^2-xt^2\right)\frac{dx}{dt}+x^2+tx^2=0$
$\int-7x^3\left(9x^4+10\right)^2dx$
$\frac{-2}{3}+\frac{2}{3}$
$\ln\left(x+1\right)-2\ln\left(x-1\right)=0$
$32x^2-12x=0$
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