$4x^2+3x^2+5x-4$
$\frac{x^{2}-16}{4x^{2}+4x}$
$344+457+-418+-532$
$\left(6x^2y^2+3z\right)^2$
$36v^2-132v+121$
$-120=-8\left(2r+1\right)$
$\frac{d^2}{dx^2}\left(4x^2-e^x\right)$
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