$x^{3}+3x^{2}-2x-4$
$39mp^2-26mq^3+13m^4$
$\lim_{x\to9}\left(\frac{\left|36-4x\right|}{9-x}\right)$
$4a^4-12a^2+9$
$\int\left(3x\right)\cos\left(x+1\right)dx$
$2\sin\left(x+60\right)=0.5$
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