$(8m + 7m^{4}-8m^{2})-(8m + 6m^{4})$
$(8m + 7m^{4}-8m^{2})-(8m + 6m^{4})$
Answer
Explanation:
Step1: Remove parentheses
When we have $a-(b + c)=a - b - c$. So, $(8m + 7m^{4}-8m^{2})-(8m + 6m^{4})=8m + 7m^{4}-8m^{2}-8m - 6m^{4}$.
Step2: Combine like - terms
Combine the terms with the same power of $m$. The $8m$ and $-8m$ cancel out, and $7m^{4}-6m^{4}=m^{4}$. So the result is $m^{4}-8m^{2}$.
Answer:
$m^{4}-8m^{2}$