Add $ \, \color{blue}{ 3x^2 } \, $ and $ \, \color{orangered}{ 2x^2+9x }$.
Answer
$$ \color{blue}{3x^2} + \left( \color{orangered}{2x^2+9x} \right) = 5x^2+9x $$
Explanation
Step 1: Write second polynomial below the first one. Making sure like terms are lined up.
$$ \begin{array}{lrr} & 3x^2 & \\ \color{blue}{ + } & 2x^2 & 9x \\ \hline \end{array} $$Step 2: Combine like terms (add each column):
$$ \begin{array}{lrr} & 3x^2 & \\ \color{blue}{ + } & 2x^2 & 9x \\ \hline & 5x^2 & 9x \end{array} $$This page was created using
Polynomial Operations Calculator