# How do you find h(-2a) given h(a)=a^2+4?

$4 {a}^{2} + 4$
Since $h \left(a\right) = {a}^{2} + 4$
Then $h \left(- 2 a\right) = {\left(- 2 a\right)}^{2} + 4$ = $4 {a}^{2} + 4$