$\left(2x-4\right)\left(x+1\right)$
$\left(6ax-2\right)^2$
$e^{-\left(-2\right)}$
$5+2+7+9+3+2+1$
$\left(1+x\right)\left(1+e^{x^2}\right)$
$120\cdot2$
$\cos\left(2x\right)\cos\left(3x\right)-\sin\left(2x\right)\sin\left(3x\right)$
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