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