$x^2-2x-35$
$20x-25x^2$
$s^2+16s+49=0$
$\sec\left(x\right)\cdot\cos\left(x\right)+1$
$x^3-x^2y+3xy^2$
$\left(q^{-4}\right)^4$
$\frac{3x^{3}y^{7}}{x^{3}y^{5}}$
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