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