## Algebra: A Combined Approach (4th Edition)

$\frac{37}{18}$
Evaluate each expression when x = 12, y=8, and z = 4: $\frac{x^{2}+z}{y^{2}+2z}$ $\frac{12^{2}+4}{8^{2}+2(4)}$ $\frac{144+4}{64+2(4)}$ $\frac{144+4}{64+8}$ $\frac{148}{72}$ = $\frac{37}{18}$