Add $ \, \color{blue}{ 3x^2-9x } \, $ and $ \, \color{orangered}{ -x+1 }$.
Answer
$$ \left( \color{blue}{3x^2-9x} \right) + \left( \color{orangered}{-x+1} \right) = 3x^2-10x+1 $$
Explanation
Step 1: Write second polynomial below the first one. Making sure like terms are lined up.
$$ \begin{array}{lrrr} & 3x^2 & -9x & \\ \color{blue}{ + } & & -x & 1 \\ \hline \end{array} $$Step 2: Combine like terms (add each column):
$$ \begin{array}{lrrr} & 3x^2 & -9x & \\ \color{blue}{ + } & & -x & 1 \\ \hline & 3x^2 & -10x & 1 \end{array} $$This page was created using
Polynomial Operations Calculator