Evaluate (5+2^3)^2-5^2

${(5 + 2^{3})}^{2} - 5^{2}$

Simplify each term.

Raise $2$ to the power of $3$ .

${(5 + 8)}^{2} - 5^{2}$

Add $5$ and $8$ .

$13^{2} - 5^{2}$

Raise $13$ to the power of $2$ .

$169 - 5^{2}$

Raise $5$ to the power of $2$ .

$169 - 1 \cdot 25$

Multiply $- 1$ by $25$ .

$169 - 25$

$169 - 25$

Subtract $25$ from $169$ .

$144$

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