Divide using synthetic division $$ ( x^{4}-5x^{3}+27x-27 ) \div ( x-3 ) $$
Answer
The synthetic division table is:
$$ \begin{array}{c|rrrrr}3&1&-5&0&27&-27\\& & 3& -6& -18& \color{black}{27} \\ \hline &\color{blue}{1}&\color{blue}{-2}&\color{blue}{-6}&\color{blue}{9}&\color{orangered}{0} \end{array} $$The solution is:
$$ \frac{ x^{4}-5x^{3}+27x-27 }{ x-3 } = \color{blue}{x^{3}-2x^{2}-6x+9} $$Explanation
Step 1 : Write down the coefficients of the dividend into division table. Put the zero from $ x -3 = 0 $ ( $ x = \color{blue}{ 3 } $ ) at the left.
$$ \begin{array}{c|rrrrr}\color{blue}{3}&1&-5&0&27&-27\\& & & & & \\ \hline &&&&& \end{array} $$Step 1 : Bring down the leading coefficient to the bottom row.
$$ \begin{array}{c|rrrrr}3&\color{orangered}{ 1 }&-5&0&27&-27\\& & & & & \\ \hline &\color{orangered}{1}&&&& \end{array} $$Step 2 : Multiply by the number on the left, and carry the result into the next column: $ \color{blue}{ 3 } \cdot \color{blue}{ 1 } = \color{blue}{ 3 } $.
$$ \begin{array}{c|rrrrr}\color{blue}{3}&1&-5&0&27&-27\\& & \color{blue}{3} & & & \\ \hline &\color{blue}{1}&&&& \end{array} $$Step 3 : Add down last column: $ \color{orangered}{ -5 } + \color{orangered}{ 3 } = \color{orangered}{ -2 } $
$$ \begin{array}{c|rrrrr}3&1&\color{orangered}{ -5 }&0&27&-27\\& & \color{orangered}{3} & & & \\ \hline &1&\color{orangered}{-2}&&& \end{array} $$Step 4 : Multiply by the number on the left, and carry the result into the next column: $ \color{blue}{ 3 } \cdot \color{blue}{ \left( -2 \right) } = \color{blue}{ -6 } $.
$$ \begin{array}{c|rrrrr}\color{blue}{3}&1&-5&0&27&-27\\& & 3& \color{blue}{-6} & & \\ \hline &1&\color{blue}{-2}&&& \end{array} $$Step 5 : Add down last column: $ \color{orangered}{ 0 } + \color{orangered}{ \left( -6 \right) } = \color{orangered}{ -6 } $
$$ \begin{array}{c|rrrrr}3&1&-5&\color{orangered}{ 0 }&27&-27\\& & 3& \color{orangered}{-6} & & \\ \hline &1&-2&\color{orangered}{-6}&& \end{array} $$Step 6 : Multiply by the number on the left, and carry the result into the next column: $ \color{blue}{ 3 } \cdot \color{blue}{ \left( -6 \right) } = \color{blue}{ -18 } $.
$$ \begin{array}{c|rrrrr}\color{blue}{3}&1&-5&0&27&-27\\& & 3& -6& \color{blue}{-18} & \\ \hline &1&-2&\color{blue}{-6}&& \end{array} $$Step 7 : Add down last column: $ \color{orangered}{ 27 } + \color{orangered}{ \left( -18 \right) } = \color{orangered}{ 9 } $
$$ \begin{array}{c|rrrrr}3&1&-5&0&\color{orangered}{ 27 }&-27\\& & 3& -6& \color{orangered}{-18} & \\ \hline &1&-2&-6&\color{orangered}{9}& \end{array} $$Step 8 : Multiply by the number on the left, and carry the result into the next column: $ \color{blue}{ 3 } \cdot \color{blue}{ 9 } = \color{blue}{ 27 } $.
$$ \begin{array}{c|rrrrr}\color{blue}{3}&1&-5&0&27&-27\\& & 3& -6& -18& \color{blue}{27} \\ \hline &1&-2&-6&\color{blue}{9}& \end{array} $$Step 9 : Add down last column: $ \color{orangered}{ -27 } + \color{orangered}{ 27 } = \color{orangered}{ 0 } $
$$ \begin{array}{c|rrrrr}3&1&-5&0&27&\color{orangered}{ -27 }\\& & 3& -6& -18& \color{orangered}{27} \\ \hline &\color{blue}{1}&\color{blue}{-2}&\color{blue}{-6}&\color{blue}{9}&\color{orangered}{0} \end{array} $$Bottom line represents the quotient $ \color{blue}{ x^{3}-2x^{2}-6x+9 } $ with a remainder of $ \color{red}{ 0 } $.