Subtract polynomials: $ \, \color{blue}{ -2v^2-8v-7 } \, $ , $ \, \color{orangered}{ -4v+8 }$.
Answer
$$ \left( \color{blue}{-2v^2-8v-7} \right) - \left( \color{orangered}{-4v+8} \right) = -2v^2-4v-15 $$
Explanation
Step 1: Write second polynomial below the first one. Making sure like terms are lined up.
$$ \begin{array}{lrrr} & -2v^2 & -8v & -7 \\ \color{red}{ - } & & -4v & 8 \\ \hline \end{array} $$Step 2: Change ALL the signs in the second row.
$$ \begin{array}{lrrr} & -2v^2 & -8v & -7 \\ \color{red}{ - } & & 4v & -8 \\ \hline \end{array} $$Step 3: Combine like terms (add each column):
$$ \begin{array}{lrrr} & -2v^2 & -8v & -7 \\ \color{red}{ - } & & 4v & -8 \\ \hline & -2v^2 & -12v & 1 \end{array} $$This page was created using
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