$\frac{\left(3x^4-5x^3+2x^2-7x+11\right)}{x+2}$
$x^2-yx^2+\frac{dx}{dy}\left(y^2+xy^2\right)$
$-1^2-4\left(1\right)\left(-6\right)$
$q^2+14q+49$
$2cotx+1=-1$
$\int\frac{x}{\sqrt{x^2-49}}dx$
$a^2+b^2=30$
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