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