$3\:-\:12\:\cdot\:-4\:+\:7$
$6x^3y^2+12x^3$
$121-22b+b^2$
$9x^4-\frac{3x^2}{x}-\frac{3x^2}{x}+\frac{1}{x}$
$58x+841x^2+1$
$\frac{x+1}{\:2}+\frac{x+2}{3}+\frac{x+3}{4}\ge\:\frac{77}{4}$
$196c^4-121a^6c^6$
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