Question

1. (13n² + 11n - 2n⁴)+(-13n² - 3n - 6n⁴)

Explanation:

Step1: Remove parentheses

$13n^{2}+11n - 2n^{4}-13n^{2}-3n - 6n^{4}$

Step2: Combine like - terms of $n^{4}$

$(-2n^{4}-6n^{4})+13n^{2}-13n^{2}+(11n - 3n)$

Step3: Combine like - terms of $n^{2}$ and $n$

$-8n^{4}+(13n^{2}-13n^{2}) + 8n$

Step4: Simplify the expression

$-8n^{4}+8n$

Answer:

$-8n^{4}+8n$