Question
Add $ \, \color{blue}{ 5x^3+6x } \, $ and $ \, \color{orangered}{ 7x^3-4x }$.
Answer
$$ \left( \color{blue}{5x^3+6x} \right) + \left( \color{orangered}{7x^3-4x} \right) = 12x^3+2x $$
Explanation
Step 1: Write second polynomial below the first one. Making sure like terms are lined up.
$$ \begin{array}{lrr} & 5x^3 & 6x \\ \color{blue}{ + } & 7x^3 & -4x \\ \hline \end{array} $$Step 2: Combine like terms (add each column):
$$ \begin{array}{lrr} & 5x^3 & 6x \\ \color{blue}{ + } & 7x^3 & -4x \\ \hline & 12x^3 & 2x \end{array} $$This page was created using
Polynomial Operations Calculator