$81x^6-49$
$2x^2-x-12\le9$
$a+b-c+a-b+c-2a+b-c$
$24x^2-22x+5$
$-96-\left(-112\right)$
$61\cdot61\cdot61\cdot61\cdot61$
$4,5a-7b+1,4b-0,6a+5,3b+b$
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