Question

add: (-6a^9 - 3) + (-9a^9)
enter the correct answer.

Explanation:

Step1: Remove parentheses

$-6a^{9}-3 - 9a^{9}$

Step2: Combine like - terms

$(-6a^{9}-9a^{9})-3=-15a^{9}-3$

Answer:

$-15a^{9}-3$