Question
Add $ \, \color{blue}{ -7x^2+9 } \, $ and $ \, \color{orangered}{ 9x^2+5x+10 }$.
Answer
$$ \left( \color{blue}{-7x^2+9} \right) + \left( \color{orangered}{9x^2+5x+10} \right) = 2x^2+5x+19 $$
Explanation
Step 1: Write second polynomial below the first one. Making sure like terms are lined up.
$$ \begin{array}{lrrr} & -7x^2 & & 9 \\ \color{blue}{ + } & 9x^2 & 5x & 10 \\ \hline \end{array} $$Step 2: Combine like terms (add each column):
$$ \begin{array}{lrrr} & -7x^2 & & 9 \\ \color{blue}{ + } & 9x^2 & 5x & 10 \\ \hline & 2x^2 & 5x & 19 \end{array} $$This page was created using
Polynomial Operations Calculator