$$(10)^{2}-4\times\sqrt{3}\times(-8\sqrt{3})$$
$196$
$$10^{2}-4\times 3\left(-8\right)$$
$$100-4\times 3\left(-8\right)$$
$$100-12\left(-8\right)$$
$$100-\left(-96\right)$$
$$100+96$$
$$196$$
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$2^{2}\times 7^{2}$