$4+\left(-2\right)^2$
$x2+3x-28$
$x^2+4y^2+z^2=9$
$m^2+8m-9$
$1+1+1+1+1+1+1+1+1+1$
$\int\left(5x^4-4\right)dx$
$\left(-315\right)+\left(-100\right)$
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