$2\left|12\right|+4\left|8\right|$
$12x^2+5x-2$
$\sec\left(a\right)\cot\left(a\right)$
$6\left(t+3\right)$
$\int\left(1+x\right)^2e^{2x}dx$
$5\left(-3\right)\left(-10\right)\left(-2\right)$
$11xy^2+33x^2y$
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