$-9m^2n+4mn^2-3m^2n$
$\int\frac{5x^2+3}{x^2\cdot\left(x^2+2\right)}dx$
$\frac{8x^2+13x+5}{x+1}\:$
$\left(a^2\:b+a\:c\right)^2$
$1.62\:+1.67+1.60+1.20+1.00+1.48$
$r^2+10r-25$
$5\left(x-3\right)\ge2x+3\left(x-5\right)$
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