# How do you simplify (9t^4+5t+8)-(3t^2-6t-4)?

Nov 24, 2016

$9 {t}^{4} - 3 {t}^{2} + 11 t + 12$

#### Explanation:

First, expand and combine the terms in parenthesis:

$9 {t}^{4} + 5 t + 8 - 3 {t}^{2} + 6 t + 4 \implies$

$9 {t}^{4} - 3 {t}^{2} + 5 t + 6 t + 8 + 4 \implies$

$9 {t}^{4} - 3 {t}^{2} + 11 t + 12$