Add $ \, \color{blue}{ -8x^2+3 } \, $ and $ \, \color{orangered}{ x^2+3x-8 }$.
Answer
$$ \left( \color{blue}{-8x^2+3} \right) + \left( \color{orangered}{x^2+3x-8} \right) = -7x^2+3x-5 $$
Explanation
Step 1: Write second polynomial below the first one. Making sure like terms are lined up.
$$ \begin{array}{lrrr} & -8x^2 & & 3 \\ \color{blue}{ + } & x^2 & 3x & -8 \\ \hline \end{array} $$Step 2: Combine like terms (add each column):
$$ \begin{array}{lrrr} & -8x^2 & & 3 \\ \color{blue}{ + } & x^2 & 3x & -8 \\ \hline & -7x^2 & 3x & -5 \end{array} $$This page was created using
Polynomial Operations Calculator