$\sqrt{x^2+5-3x}-3=0$
$-84-23-90+54-44$
$y=ln\left(2x^2+4x\right)$
$-1-2\sec\left(-4x\right)=1$
$\left(\frac{7x}{x^2+x-6}\right)\cdot\left(\frac{x^2-4x+4}{7x^2+x-8}\right)$
$-2x^2+6x-5=0$
$2\left(xy^2-x^3\right)+\:y^2-x^2$
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