$-474\:+\:\left(-372\right)$
$\frac{dt}{dt}=4\left(x^2+1\right)$
$-27\cdot9$
$2\cdot22\cdot6$
$8\left(-2\right)\left(-3\right)-\frac{3\left(-2\right)}{2\left(-3\right)}$
$\frac{1+\sin\left(2y\right)}{\cos\left(2y\right)}$
$4y^2-4+1$
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