$x^2+x-11$
$\left(x^2-1\right)\left(x^2+7\right)\left(x^4-6x^2+7\right)$
$x^3-4x^2-25x+100$
$cos\left(53\right)-cos\left(15\right)$
$u^2+18u+81$
$\left(3a^2.7xy^3\right)^3$
$x^2+8x-17$
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