# If h(n) = -2n^3 + 1 and g(n) = -n-3, what is h(-2) + g(-2)?

Jun 5, 2016

16

#### Explanation:

let's substitute n by -2 in the first one
$h \left(- 2\right) = - 2 {\left(- 2\right)}^{3} + 1$
$h \left(- 2\right) = 16 + 1 = 17$

let's substitute n by -2 n the second one
$g \left(- 2\right) = - \left(- 2\right) - 3$
$g \left(- 2\right) = - 1$

then

$h \left(- 2\right) + g \left(- 2\right) = 17 - 1 = 16$