$\frac{a}{2}+a_{3\:}$
$\frac{243.252}{25}$
$12x^2-3x-2$
$\left(4x+1\right)^2-\left(4x-1\right)^2$
$25+5y\ge8$
$3\int\:x^2e^{5x}dx$
$5-\frac{6-4x}{2}<8$
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