Add $ \, \color{blue}{ n^2+6n+7 } \, $ and $ \, \color{orangered}{ n^2+6n+9 }$.
Answer
$$ \left( \color{blue}{n^2+6n+7} \right) + \left( \color{orangered}{n^2+6n+9} \right) = 2n^2+12n+16 $$
Explanation
Step 1: Write second polynomial below the first one. Making sure like terms are lined up.
$$ \begin{array}{lrrr} & n^2 & 6n & 7 \\ \color{blue}{ + } & n^2 & 6n & 9 \\ \hline \end{array} $$Step 2: Combine like terms (add each column):
$$ \begin{array}{lrrr} & n^2 & 6n & 7 \\ \color{blue}{ + } & n^2 & 6n & 9 \\ \hline & 2n^2 & 12n & 16 \end{array} $$This page was created using
Polynomial Operations Calculator