$2x^2-12x+2$
$\sin^2\left(a\right)-\sin\left(a\right)=0$
$2+-9+-2+8$
$7m^2+6m^2-3m^2$
$\int_0^32x^2+2x+3\:-\left(x^2-4x+3\right)dx$
$-9-\left(2-9\right)$
$\frac{\left(2t^2-4t\right)}{\left(3t-3\right)}$
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