$\left(3w+2\right)\left(3w-2\right)$
$-5c-27c+18c$
$\frac{64-25b^2}{2b+b^2}$
$\int\frac{7}{\left(25x^2+4\right)}dx$
$3x^2+6x+4$
$\lim_{x\to-1}\left(2x^2+1\right)\left(1-2x\right)^2$
$-9+7+3-5-9+14+16-17-2-5$
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