$\left(2x+5\right)\left(3x-7\right)$
$\left(\sqrt{x^2+9}-3\right)\left(\sqrt{x^2+9}+3\right)$
$36\cdot23$
$1-y^{22}$
$\int_0^{\pi}\frac{3}{x^2+1}dx$
$x^6+x^5+x^4-6x^3-8x^2+24x=0$
$3\left(2b-a\right)-9a\:+6b$
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