$\left(-1-n\right)^2$
$a^2+b^3-c^4+d^3;\:a=2;\:b=3;\:c=4;\:d=5$
$x^2-3\le2x+28$
$c-34=c-39$
$-694+-74$
$4t-t^2+1$
$x^2aya$
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