# How do you simplify 7^2 + 8^3?

Mar 2, 2016

now ${7}^{2} = 7 \times 7 = 49$
and ${8}^{3} = 8 \times 8 \times 8 = 512$
hence: ${7}^{2} + {8}^{3} = 49 + 512 = 561$