Precalculus (10th Edition)

Published by Pearson
ISBN 10: 0-32197-907-9
ISBN 13: 978-0-32197-907-0

Appendix A - Review - A.3 Polynomials - A.3 Assess Your Understanding - Page A30: 64

Answer

Quotient $=3x-1$ Remainder $=x-2$

Work Step by Step

The given expression is $(3x^3-x^2+x-2)\div(x^2)$ Perform long division to obtain: $\begin{matrix} & 3x & -1 & ​& & \leftarrow &\text{Quotient}\\ &-- &-- &--&--& \\ x^2) &3x^3&-x^2&+x&-2 & \\ ​& 3x^3 & & & & \leftarrow &3x(x^2) \\ & -- & -- & & & \leftarrow &\text{subtract} \\ & 0 & -x^2 & & & \\ & & -x^2 & & & \leftarrow & -1(x^2) \\ & & -- & -- & & \leftarrow & \text{subtract} \\ & & 0&x &-2& \leftarrow & \text{Remainder} ​\end{matrix}$ Checking: (Quotient)(divisor)+ Remainder $=(3x-1)(x^2)+x-2$ $=3x^3-x^2+x-2$ $=$ Dividend Hence, the Quotient is $3x-1$ and the remainder is $x-2$.
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