$2x\left(3x^2-4\right)+1$
$\left(-5i+3r\right)\left(9g-2m\right)$
$x^3+3x^2-5-6$
$\int_{-4}^x\left(t-1\right)dt$
$20+90+510$
$\left(21a+13b\right)^2$
$319+20$
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