Question
Subtract polynomials: $ \, \color{blue}{ 4x+5 } \, $ , $ \, \color{orangered}{ -4x }$.
Answer
$$ \left( \color{blue}{4x+5} \right) - \left( \color{orangered}{-4x} \right) = 8x+5 $$
Explanation
Step 1: Write second polynomial below the first one. Making sure like terms are lined up.
$$ \begin{array}{lrr} & 4x & 5 \\ \color{red}{ - } & -4x & \\ \hline \end{array} $$Step 2: Change ALL the signs in the second row.
$$ \begin{array}{lrr} & 4x & 5 \\ \color{red}{ - } & 4x & \\ \hline \end{array} $$Step 3: Combine like terms (add each column):
$$ \begin{array}{lrr} & 4x & 5 \\ \color{red}{ - } & 4x & \\ \hline & & 5 \end{array} $$This page was created using
Polynomial Operations Calculator