$\left(x^2-1\right):\left(x^2+1\right)$
$-534-809$
$w^2-24w+144$
$f^3-11f^2+f-11$
$\left(t+a\right)^3$
$2x^2-1\cdot x^2+5$
$3\left(2\right)^2-\left(2\right)\left(3\right)+3\left(5\right)$
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