$-16t^2+8t-1$
$-2x\left(-d-6\right)-2x\:\left(-2d+6\right)$
$\left(c^2d^3\right)^{-\frac{1}{3}}$
$\left(2p^3-4\right)\left(2p^3+4\right)$
$49g^2+28g^2+28g^2+16m^2$
$100-1049+50-200$
$45\cdot2+45\cdot2+15\cdot2+45\cdot2+14\cdot2+11\cdot2$
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