Evaluate -8(2)^(3(0))+3

$- 8 {(2)}^{3 (0)} + 3$

Simplify each term.

Multiply $3$ by $0$ .

$- 8 \cdot 2^{0} + 3$

Anything raised to $0$ is $1$ .

$- 8 \cdot 1 + 3$

Multiply $- 8$ by $1$ .

$- 8 + 3$

Add $- 8$ and $3$ .

$- 5$