Add $ \, \color{blue}{ 2x^3+3x^2-x+6 } \, $ and $ \, \color{orangered}{ 2x+1 }$.
Answer
$$ \left( \color{blue}{2x^3+3x^2-x+6} \right) + \left( \color{orangered}{2x+1} \right) = 2x^3+3x^2+x+7 $$
Explanation
Step 1: Write second polynomial below the first one. Making sure like terms are lined up.
$$ \begin{array}{lrrrr} & 2x^3 & 3x^2 & -x & 6 \\ \color{blue}{ + } & & & 2x & 1 \\ \hline \end{array} $$Step 2: Combine like terms (add each column):
$$ \begin{array}{lrrrr} & 2x^3 & 3x^2 & -x & 6 \\ \color{blue}{ + } & & & 2x & 1 \\ \hline & 2x^3 & 3x^2 & x & 7 \end{array} $$This page was created using
Polynomial Operations Calculator