$${ \left( \frac{ -1 }{ 2 } \right) }^{ 2 } -8( \frac{ -1 }{ 2 } )+12$$
$\frac{65}{4}=16.25$
$$\left(-\frac{1}{2}\right)^{2}-8\times \frac{-1}{2}+12$$
$$\frac{1}{4}-8\times \frac{-1}{2}+12$$
$$\frac{1}{4}-8\left(-\frac{1}{2}\right)+12$$
$$\frac{1}{4}-\left(-4\right)+12$$
$$\frac{1}{4}+4+12$$
$$\frac{17}{4}+12$$
$$\frac{65}{4}$$
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$\frac{5 \cdot 13}{2 ^ {2}} = 16\frac{1}{4} = 16.25$
