Intermediate Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-894-7
ISBN 13: 978-0-13417-894-3

Chapter 6 - Section 6.4 - Division of Polynomials - Exercise Set - Page 445: 44

Answer

$\displaystyle \frac{x^{4}-x^{3}-7x^{2}-7x-2}{x^{2}-3x-2}=x^{2} +2x+1$

Work Step by Step

$ \begin{array}{llllllllll} & & x^{2} & +2x & +1 & & & \color{red}{ \small{Quotient}} & & \\ & & -- & -- & -- & -- & -- & -- & & \\ x^{2}-3x-2 & ) & x^{4} & -x^{3} & -7x^{2} & -7x & -2 & & & \\ & & x^{4} & -3x^{3} & -2x^{2} & & & \color{red}{\leftarrow \small{ x^{2}(x^{2}-3x-2) } } & & \\ & & -- & -- & -- & & & \color{red}{\leftarrow \small{ subtract } } & & \\ & & & 2x^{3} & -5x^{2} & -7x & -2 & & & \\ & & & 2x^{3} & -6x^{2} & -4x & & \color{red}{\leftarrow \small{2x(x^{2}-3x-2) } } & & \\ & & & -- & -- & -- & & \color{red}{\leftarrow \small{ subtract }} & & \\ & & & & x^{2} & -3x & -2 & & & \\ & & & & x^{2} & -3x & -2 & \color{red}{\leftarrow \small{ +1(x^{2}-3x-2) } } & & \\ & & & & -- & -- & -- & \color{red}{\leftarrow \small{ subtract } } & & \\ & & & & & & 0 & \color{red}{\leftarrow \small{ Remainder } } & & \end{array} $ $\displaystyle \frac{x^{4}-x^{3}-7x^{2}-7x-2}{x^{2}-3x-2}=x^{2} +2x+1$
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